Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d7e927a2dbfded6…

MALICIOUS

PDF

105.6 KB Created: 2021-07-01 09:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fba72e3e99c22b0f4c188125d60b714e SHA-1: 3bf7fa8789715d4c5ff5339e2b1380b429610ff9 SHA-256: 8d7e927a2dbfded64690cecc0531b5358e99217da6e620529a611711f023f13f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external PDF files hosted on compromised WordPress sites, suggesting a distribution or redirection mechanism. The document's structure and content align with phishing lures for lottery or parcel delivery scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1be424b3d---81716172116.pdf
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/ffd025d146dcee1f81a7599d26cac46b/redadasalixiwo.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/9ca28199c244fcdd7a891ab961a0c058/14342712523.pdf
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/c8c0f770675b4954649c120b369554fa/88949971597.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f38827c0c8---zejajevaj.pdf
    • http://pinetreerealty.ca/clients/55933/File/7999606452.pdf
    • http://rallyteamwalraven.nl/file/44761525460.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/vojhvtm174sq1at0kt8hiajc1s/23151640432.pdf
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c245ae61f31---55578116297.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9b685466e---21840892493.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/b7e8ca1ba5a97eb5c9a6bdec84c9b6af/zebazelodifofupatat.pdf
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/29464a1679cf936fd7dc565d06b42537/wemafevi.pdf
    • http://lideparts.com/userfiles/file/1621586567.pdf
    • https://aneri12.eu/res/file/pukimemewezota.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6fe887141---90562568165.pdf
    • http://werkkledingverkoop.nl/images/docman/files/wafite.pdf
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/gtit53shfgle85lkj2rde4f8d1/navutumujo.pdf
    • http://onishi-kyosendo.jp/archive/47880931371.pdf
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9a2b4d2cf---87957151440.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adfdd710d85---66458905660.pdf
    • http://starlightcelebre.com/clients/4/43/43e9139217482d7666ce300faf566241/File/28559941489.pdf
    • https://pharma-tools.eu/galeria/file/10976368283.pdf
    • https://sluganarodu.org/userfiles/files/31282911093.pdf
    • https://igruppe.no/ckfinder/userfiles//files/timivejar.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=rude+3+letter+words
    • http://e1pl2.nazwa.pl/busy/fotki/file/tuxifovagodutopuvi.pdf
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001169f.bin
916135c0327089d6ec8c0c09e81da9389febfaa8ec9b6c4177b8b4e9f582ebc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1169F 16172 bytes
font_01_sfnt_off00012c3a.bin
b965b0be9bba1ebb4cc3c4d4beaec415e06fe0e6cc9d3314b480a60879e1ba36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C3A 20240 bytes
font_02_sfnt_off00015eeb.bin
082c9b3953ac2190031fef02773bbedf3b960673f1c72205faf0de332286f4e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15EEB 2132 bytes
font_03_sfnt_off0001687c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1687C 16792 bytes
font_04_sfnt_off00018093.bin
2c5d1c1f95f6cd135a83ba7496f267b5b2f57b289e8ca8e1a12c0b532eb552b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18093 10284 bytes

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