Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62fc7644d85d932…

MALICIOUS

PDF

73.9 KB Created: 2021-03-18 07:52:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1ec801a30cae65ed4393090a67554e3f SHA-1: 3c5581039a48d8bf60269ea2dbf7f4b8ffd4195d SHA-256: e62fc7644d85d932df6808eee79685a3265a93c5c696149824dd1d470bfd611e
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=west+coast+chopper+bicycle+motor+kit PDF link annotation
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/dafasowiru_dobupipebisak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403807/normal_5ff56771c0d30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428331/normal_6003ff1497e82.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/hcjzLNl/69124435947.pdfIn PDF document text
    • http://rabuvuz.22web.org/is_conair_good.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469630/normal_5fe279d99980f.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/30he6gW/can_mini_stroke_cause_double_vision.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495846/normal_600f46d28adf3.pdfIn PDF document text
    • https://lewanodeb.weebly.com/uploads/1/3/4/8/134885095/redomoxosewerurop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_600f1749e42c2.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/hhSVhdA/gixibamoluwusadiv.pdfIn PDF document text
    • https://fadufavibog.weebly.com/uploads/1/3/4/8/134889314/4670327acb15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fd187c7d45e8.pdfIn PDF document text
    • https://mipikarekegimo.weebly.com/uploads/1/3/1/6/131606279/6812d4.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/YMicNid/ludetemezapili.pdfIn PDF document text
    • http://vatemuredaxusob.22web.org/dragon_age_origins_how_to_install_mods_manually.pdfIn PDF document text
    • https://cdn.sqhk.co/burexewejam/eM04gfz/petty_cash_reconciliation_template_excel_2003.pdfIn PDF document text
    • https://cdn.sqhk.co/pidodalatip/3hfZifz/76396273721.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/nKjcRif/25246082612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499285/normal_604730664460c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_600f544a558b8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jawegoxizifiti.epizy.com/sociologie_gratuit.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_off0000e27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27E 5492 bytes
SHA-256: df07549ab13e3bce75819bcab002b4212b8635110a6ad25a71bbefc2995fde87
font_01_sfnt_off0000f516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF516 10904 bytes
SHA-256: a6f8375562e27204d5a1de150c40ac20a15cd7d9ad044c5ff0d98f32f5762f33

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