Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb922a1c56ee9ee…

MALICIOUS

PDF

88.1 KB Created: 2021-09-01 19:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1319362db5bcdafe318c1b9fec062ae7 SHA-1: 8536c641115de4d2b5cd0a949acde69b10f6a115 SHA-256: 0bb922a1c56ee9ee8be3ddfb43bf638b339d2bd74dfb33082656eaf7f16f80e9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many pointing to compromised WordPress upload directories, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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 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://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/1iqi91rr8iqm63bsglvjv5vsdd/60169977064.pdf In PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098f54da8c0c---9304412324.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/a2a6cfb0a86ea327c902d968db710172/tinadikogepajigolutak.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/khcf4me77q1puu3fo7lbpdsagb/furomamemarozegeteketo.pdfIn PDF document text
    • http://jeyadhurgatemple.com/userfiles/file/midinatopolisudebiros.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d50d81a5d20---lemem.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/fifuvufexogezuvagazexufis.pdfIn PDF document text
    • http://evopizza.lt/ckfinder/userfiles/files/96289068773.pdfIn PDF document text
    • http://tweddlefoto.com/files_contenidos/upload/files/68408174964.pdfIn PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210821_7207651F461B2E89.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/nolenoxedarowivojugino.pdfIn PDF document text
    • http://rebizplus.com/userfiles/file/66163960587.pdfIn PDF document text
    • http://dbhsreunion.com/clients/21010/File/rabazolorokar.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7453491f69---28237970211.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b498e62fc4d---18320430254.pdfIn PDF document text
    • http://tahyuh.com/uploads//files/202108082142412430.pdfIn PDF document text
    • https://puppometalli.eu/file/zebemasufabizo.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/4938fba21b029d94db3e270fdfd66e76/28355773599.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///18295993461.pdfIn PDF document text
    • http://win-sonic.com/ck_imgs/files/silanaxinavodi.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e91a5ac16be---tenoxipapepexuvepezap.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/73e45c5beab2a62ea2129ef6cba9b4ce/nazagakowujijajube.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=hyacinth+plant+and+catsPDF 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_off0000f4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDF 10364 bytes
SHA-256: a8770ebfd37c4c8e30a65796c10514580c8c60ebd0aeb665bed384a5dde44dae
font_02_sfnt_off00012422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12422 17964 bytes
SHA-256: c763464878f8aa92d350135daefc36c91fac1f82d0717cf8f1990030b7355df3

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