Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0b1c966608626a…

MALICIOUS

PDF

83.9 KB Created: 2021-03-14 14:31:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9f8ae03c62add3f35e6732bc80330ac8 SHA-1: 69241d71cbda1ff4bca9a1c60341a4299947fe97 SHA-256: 2c0b1c966608626ae2c6aeba70ee7b2e2a7ecda5d941d319e7fcfe013c5bd7fd
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable hosting and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to appear legitimate by linking to many external resources, while the 'SE_URGENCY_LURE' heuristic indicates deceptive content aimed at prompting immediate user action. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://fokemale.ru/award?keyword=map+of+us+states+and+capitals+pdf PDF link annotation
    • https://cdn.sqhk.co/xafiguzi/gghhegf/square_edge_painter.pdfIn PDF document text
    • https://bamigabimav.weebly.com/uploads/1/3/1/6/131636977/4263788.pdfIn PDF document text
    • http://loneresel.mygamesonline.org/introduction_to_calculus_and_analysis_vol._1.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/foxelozu-vubuxat-malad.pdfIn PDF document text
    • https://pasorizafam.weebly.com/uploads/1/3/4/0/134096756/pekomajekadawexiw.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/0jgij0y/565795858.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/SMBifmw/flip_diving_cheats.pdfIn PDF document text
    • http://zitalogeloluwiw.mygamesonline.org/irregular_verbs_present_simple_exercises.pdfIn PDF document text
    • https://vajinivokesele.weebly.com/uploads/1/3/5/3/135326698/a062b04.pdfIn PDF document text
    • https://jubiwaxu.weebly.com/uploads/1/3/4/6/134645567/366f47d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/gurub.pdfIn PDF document text
    • http://regisebe.epizy.com/blockchain_game_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea98190-9080-4d24-97ea-79aeb9707b81/80565086200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99ed6bf6-b049-4cfc-9306-1ee7147b0136/bivibelojiwubonofipug.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/pidotunujatuka.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/47548056326.pdfIn PDF document text
    • http://titugol.atwebpages.com/walmart_ps5_black_friday_restock_times.pdfIn PDF document text
    • http://vatupizukuvos.rf.gd/burifuwoxedibixokilexep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c589309-1de1-4c26-8160-ee79319cda4f/writing_with_style_trimble_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/congruent_triangles_worksheet_gcse.pdfIn PDF document text
    • 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_off00010afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 5056 bytes
SHA-256: 1f4b72b76c0554a3bc533bd1b8a0781f090196819cc607e1d5ff7f3e50f30828
font_01_sfnt_off00011c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C54 11304 bytes
SHA-256: 86f15b6310e90d2c2863ee4ab6f00d8c7d372891cec7c88b9d2f6587de3f539f

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