Malicious PDF — malware analysis report

Static analysis result for SHA-256 9655948a3785fe22…

MALICIOUS

PDF

82.2 KB Created: 2021-03-04 18:20:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3a85119166d25e3841d65beae75ce23a SHA-1: 2c6e3e5243742f2e40ca4fbc4ab78db300d8093e SHA-256: 9655948a3785fe2289972579354cd1438c3d1f506788764018ba53f720d1c949
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://xezojetit.ru/123?utm_term=from+good+to+great+quotes PDF link annotation
    • http://dirtygirl.fun/513671476794gqtu.pdfIn PDF document text
    • https://bokoxopeke.weebly.com/uploads/1/3/4/2/134266118/divozel_nukesoriwamidu.pdfIn PDF document text
    • http://bogplaktnc.fun/alvida_alvida_noha_freeoz50b.pdfIn PDF document text
    • http://sosyaltakipcipanelin.com/377725593118ojj8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503033/normal_6029d7f78048c.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/dhihfhc/rally_health_inc_washington_dc_phone_number.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/hihihjh/16335615155.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456122/normal_5fdcb1103f17d.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/dobaxagezer.pdfIn PDF document text
    • http://tixshopclub.fun/iracing_car_paint_templateszr66g.pdfIn PDF document text
    • http://mediaverifiedbadge.com/battlefront_2_max_rank69c6y.pdfIn PDF document text
    • http://vnatural.space/basic_financial_accounting_jr_mongajg413.pdfIn PDF document text
    • http://alania365.ru/57522554235dwmai.pdfIn PDF document text
    • https://wexotagupoma.weebly.com/uploads/1/3/2/8/132814474/471722c914.pdfIn PDF document text
    • http://jsexj.fun/45007773612l99bp.pdfIn PDF document text
    • https://kikosezuzo.weebly.com/uploads/1/3/1/3/131378972/3749692.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2649b9-8869-4816-b773-d3cca4001acb/a_cuantos_decimetros_equivale_un_metro_cuadrado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0d0fc3-725c-4ec2-a1bf-8981c52f5c9f/1809646169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/126ebc1a-bbbf-4858-a735-3888a4ec385d/understanding_statistics_in_the_behavioral_sciences_10th_edition_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a45c80b-b14e-41d6-81de-d6cc62d434a3/lalisezuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa2b7560-06a3-4122-873e-fb21a06c6954/how_to_cite_secondary_sources_in_apa_6th_edition.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 5192 bytes
SHA-256: 6a43b01b3e5037b98f7abc72c8672cfcb552a8f981b1a731b5de57fced9d096c
font_01_sfnt_off0001136e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1136E 11816 bytes
SHA-256: 6abf8e5ad1af99f825a72975246ae73fd884d893f7d3569dfc0c470eccfd58c3

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