Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e75101b458d0d1a…

MALICIOUS

PDF

87.9 KB Created: 2021-07-25 23:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 76ee6bb6857aff33828190e78bf4e4a1 SHA-1: 219d6933110dce7a24d0ee808346bfaf758d453b SHA-256: 0e75101b458d0d1a2cf8ab223eb2e7bf163223d9ca8aadd92f3b3cd59802a1ab
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm intended to deceive users or manipulate search engine results. The presence of these links indicates an attempt to direct users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://geometrarontani.it/userfiles/files/demefanodojepi.pdf
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/559de5bf3321b6d25443ec330666bf8f/fogutiwofidixuvefi.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/b663ed0e60c7e46f757acfd84b10be73/lovuxabibeduxolefidisosor.pdf
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b081e473d4f---gakurexutejodamibedinupuf.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9ea14bcc62549bab28c4b02f3a9bc9b7/xiwor.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a378fcf19bd---29289123699.pdf
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/32fb6b83ba77737c6fab01fc3189d509/16367197270.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/1af80dabbf5a3a17c6783d2e2a1e6ca9/67281387241.pdf
    • http://kalikraft.com/images/file/90086113462.pdf
    • https://familienarbeit3plus.ch/userfiles/files/wakivupizot.pdf
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/5c1d971ba0bb74575835386572376e4d/likejigolovelix.pdf
    • https://hagepoorter.be/files/files/2031933018.pdf
    • http://indigobaby.eu/upload/files/75451751937.pdf
    • http://clairerolo.com/userfiles/file/65512476069.pdf
    • http://nova-auto.com/upload/62243034110.pdf
    • http://nationshield.ae/userfiles/files/84575690511.pdf
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/7c2f779f925bbf370f99d40e02e63c2c/79142558695.pdf
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e7974e69347---woradovetikugexidos.pdf
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607afb7068124---87232126212.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/0bb9c5997c9b9f1dc86599413190d5c0/56483517219.pdf
    • https://accuratesearch.com/userfiles/file/74251434689.pdf
    • http://yejida.com/userfiles/file/lafat.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=how+to+fix+cod+mobile+black+screen
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f538.bin
ed41edabc557689bb7d8af884e718ae7f57db1c493e03f5fcecff71747acb6ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xF538 11048 bytes
font_01_sfnt_off00010ef0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF0 16792 bytes
font_02_sfnt_off00012702.bin
72cfb2f6925a97a2b49c3dc85528ee073061f515d0db23a807254d90a696b9da
pdf-font-stream PDF embedded font (sfnt) at offset 0x12702 16484 bytes