Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f47d708e0657056…

MALICIOUS

PDF

76.8 KB Created: 2021-04-30 14:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9665c2c832872220ba95ec901278edfe SHA-1: 598a0ccce5af6d2b15768462a170ef19c71ad3d0 SHA-256: 2f47d708e06570560ed4fa1f9e797ad731d4065c6865c2e8876a2c465deaac0c
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, which in turn host other PDF files. This structure suggests a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://empylean.com/wp-content/plugins/super-forms/uploads/php/files/39tqlbg0umfgcf62fu911008se/zovir.pdf In PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/bd04b71c91a59221d89d8f25c41875e7/kuxunitowuzatujapad.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fea33d8db0---pokebafalili.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d354d71116---poxafigupalinomanojuva.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/lolipitofejosuti.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/ohk8tsllnlg666jfq00396f3pl/40785618036.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/4s1eah38gvci6sqlej0vnv7s96/nabugobigizobomozenavis.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/b25a98968152004e9c00af7a10153dae/viwusegegumuxuvikiwu.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/b55npqc9c7up32h0os8r9orf9t/buxararivedilevemope.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bdf34ff4c---sewuj.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/465de66de8af83401ad3620b5e408200/zuvitoge.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/88f80ec3ceeeb134580202b6362207e6/20833839775.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/feebc728d33c106ca8b122fd609a07bd/24234185376.pdfIn PDF document text
    • http://ahchala.com/img/file/zatopineminibap.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a94feecd6b---kixikegugosuwigumo.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/nc45hahdk2hggfd07fcci7rnbv/kevukelabetorawobex.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/jt5dlomm2ui7k2ceu9tgi6qfk6/48907537905.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084755d4dcc5---darimisigadivejo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=arduino+ladder+programming+software+freePDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED10 5444 bytes
SHA-256: 1888e67573f65e26d6031e2116eae64946457808fc5ae289258ae6f96e2f0802
font_01_sfnt_off0000ff91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 11344 bytes
SHA-256: bc956a6a1dfcfcbf9fec6d66f89bfcd876753cc87796644430430d5d946272e3

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