Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0dca34d2f64eb3…

MALICIOUS

PDF

84.9 KB Created: 2021-09-01 05:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: a3ce96c79132deff6502e09ae13a5fb2 SHA-1: 5562afbcb22f3c662d823b4ed2cdb9806ef7429a SHA-256: 9d0dca34d2f64eb3699dc78bccb8079c7672670d02c2ae41c4ee22364fbf3f3b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites hosted on compromised WordPress installations, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the nature of the heuristics point towards a spearphishing attachment, likely leading to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/90j7nc7ek9ds8u4l5lldmdu5c7/17224299728.pdf In PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/i488aci3robcf6ikmmgld3qrnc/vulux.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3ad1d9d6d---tiponoxifegerugalirok.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/553c90d07f8e4a0dcfa218b98fcc2580/komoluxodononipofelikini.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607674086272c---pesinasuvigoxu.pdfIn PDF document text
    • http://cerrutistudio.eu/userfiles/files/11026026585.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16085fbc57837f---pupajefejorufapowelafe.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16114e15e59e77---najezozulebazin.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0b12a1fef---rozanutuwiposusexo.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b93f9493d1b---65444631077.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb22059d10d---vukivijixejarusomibore.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/81546508119.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/jajunidanifukeg.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/uktp48h49tv2our3ojvgt8jdb4/getafonezoj.pdfIn PDF document text
    • https://ritascreation.com/userfiles/file/boponiruvafaxujume.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/8322891462749bf6005b9161124c5978/48572280088.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608095d81aea5---wajofomiravegagix.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/d9e5a6e5cb7bcdb4074574b9ebec0ac0/87208532713.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acff6c5f24b---mifulomusefipuvujoga.pdfIn PDF document text
    • http://remobudostol.pl/pliki/dakaduzikiwinatut.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/nabigelobegufo.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/dimolunogesirisele.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/58048382503.pdfIn PDF document text
    • http://uk-finansist.ru/userfiles/file/linari.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/sj0apd5d62ovgchti0hvdrpp09/wudelawogibofe.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/702d3fd8d8e3d4d7f8ffb364b5425d1a/11494860194.pdfIn PDF document text
    • https://shieldtech.cz/ckfinder/userfiles/files/45527416042.pdfIn PDF document text
    • http://chieucoingason.vn/files/galit.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=star+trek+roleplaying+game+player%27s+guide+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE403 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1A 11256 bytes
SHA-256: 5a696532df384e3fa2a2540a008fab1d193465b8dbf6dcf79e975ff76875d894
font_02_sfnt_off00011655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11655 17936 bytes
SHA-256: 9b7fd851262612dca75502d9ed85ca600f8b9672802f51d7581e10c155462726

Open this report in the interactive analyzer, or submit your own file for analysis.