Malicious PDF — malware analysis report

Static analysis result for SHA-256 6120980e3575939f…

MALICIOUS

PDF

79.6 KB Created: 2021-09-06 06:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5b8af77e273b6e5f6d26c5d52f270fee SHA-1: b612bb7a77f5a86b0797e23582a1868caddcf8fe SHA-256: 6120980e3575939fd44da74040f51ae879a3ed84fc48893401828cbd4ac43427
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Multiple heuristics point to the PDF containing a link farm pointing to compromised WordPress sites and potentially disposable hosting, suggesting a phishing or malware distribution lure. The embedded URLs and the nature of the heuristics strongly suggest this PDF is part of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://anpheatingandac.com/nbloom/fckuploads/file/komibipegaxaliwokarewe.pdf In PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b0bbfc42cef---43952089374.pdfIn PDF document text
    • https://hinaweb.com/upload/file/numulafugepadu.pdfIn PDF document text
    • http://montagnobozzone.it/userfiles/files/2210066898.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/80982055693.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/d8345c611c29e8797d05195d86b93a83/vapefajeliriz.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/f0sk3m24uf2tdrrovh0bln0mc4/joxoja.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084d9f3b6e3f---finotoxawakor.pdfIn PDF document text
    • http://augsburger-dartliga.de/uploads/file/85725348884.pdfIn PDF document text
    • http://www.klimavill.com//data/editorfile/fodovevapoja.pdfIn PDF document text
    • http://self119.net/upload/userfiles/2021/07/files/210705101711.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/tuwemipubaboxajevuxup.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/d315b77aa6b44ba6e3069db88d88b683/nerotebudixesupivafubidu.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c3a06711120---remafafesifupebuwos.pdfPDF link annotation
    • https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/91048630166.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/bfc8eps0bvd6qmffsan3ckqnje/jamefasazevokebekugapolu.pdfIn PDF document text
    • http://strandedtattoo.com/file/raxutewukasisum.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ed5bd2550a4---80615399222.pdfIn PDF document text
    • http://english-life.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca461a893a---gegisuwamawopiduzuwo.pdfIn PDF document text
    • http://sanraimundo.cl/dyn/uploads/file/rikitevebopenelemabetitef.pdfIn PDF document text
    • http://lnshiyue.com/userfiles/file/20210623012502_383141473.pdfIn PDF document text
    • https://net-mex.hu/ckfinder/userfiles/files/30707510808.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4aeb1f996---pesizizipitejotamijidun.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/c494310aa359c2cc5a48370bfcfa655c/derinusepulojib.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786305cdcd3---zopojulo.pdfIn PDF document text
    • https://mimpiindah1.com/contents//files/ganakijuvaziruwaru.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/xovelalaxowed.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=melodic+pattern+worksheetPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF89 18556 bytes
SHA-256: a5e9795554204e218164942782630681cc3f46ea94dc576da685e5914b26adb8
font_01_sfnt_off0000ffd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD0 10784 bytes
SHA-256: 3ee39c1fa213e2710a33db391ceeafc3d1710a7e82183f072e38fee0c337db3c
font_02_sfnt_off000118a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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