Malicious PDF — malware analysis report

Static analysis result for SHA-256 29767ca3f6de08b9…

MALICIOUS

PDF

78.1 KB Created: 2021-06-12 05:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 7531137573aa3410c8143a3648bd3a11 SHA-1: 03bf154b96fc4ca80bacce43d53b4326d90e1291 SHA-256: 29767ca3f6de08b94de252b8a72527b64870ccef94a4640df49796e827e75d07
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of 'utm_term' parameters in some URLs further supports a phishing or SEO-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://garglob.ru/pbw?utm_term=aaliyah+i+miss+you+mp3+juice PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fce56bb67ee4.pdfIn PDF document text
    • https://lakadepoti.weebly.com/uploads/1/3/5/3/135301691/c75e7c6.pdfIn PDF document text
    • https://zetizisoxaw.weebly.com/uploads/1/3/4/4/134498522/936538.pdfIn PDF document text
    • https://xatuguje.weebly.com/uploads/1/3/1/8/131856293/21b208e4900f781.pdfIn PDF document text
    • https://jiwedizuku.weebly.com/uploads/1/3/4/3/134310564/1778028.pdfIn PDF document text
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/ferowatoje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_604f5a2aed583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_60464ab3e64a7.pdfIn PDF document text
    • https://pavufunipuz.weebly.com/uploads/1/3/4/2/134265556/8271901.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4486743/normal_60b5f77fc062e.pdfIn PDF document text
    • https://wavarojejepifog.weebly.com/uploads/1/3/4/5/134590929/fudim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413118/normal_5fefb3a89aba2.pdfIn PDF document text
    • https://rovatelafewi.weebly.com/uploads/1/3/4/3/134392743/nemizulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/80a20119-628e-4e15-9e62-cae112241176/jesebomoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91705648-01d3-46bb-a016-ce3c6239666e/exercises_prevent_diastasis_recti_during_pregnancy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14d3e858-1eca-4ece-bf4c-739f156813b1/jarujafabifakab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d444df-0986-49bb-aeb5-d0e79d4402df/why_do_you_think_it_is_important_to_recycle_paper_towels.pdfIn PDF document text
    • http://gawalutibig.pbworks.com/f/hammer_of_thor.pdfIn PDF document text
    • http://lomubel.pbworks.com/f/how_to_diagnose_dysgraphia_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96977273-9d35-474b-8eff-aa07dacbf587/logudurefafejafigaxopud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c2b6c3d-5bf6-4ad9-a03d-1c8a8c7c9e78/19055573202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53a6be92-819d-49e2-a8d5-f20c6d73f6ac/how_to_install_psp_iso_on_ps_vita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f2a7712-3557-425d-a425-fe23baf275d5/70270514600.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 5104 bytes
SHA-256: e829728d47b3583a73ae2df44a28102a099fa3b3ea48b45e443b547bf49a9a35
font_01_sfnt_off0000f115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF115 13216 bytes
SHA-256: 0e7b606c873cc3bbdc9a359f37240c74a12f15c6883803e91c8f80546334a283
font_02_sfnt_off00011b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B24 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361