Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c206a410b30fb6c…

MALICIOUS

PDF

78.7 KB Created: 2021-04-15 22:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bad793e6a359cd381dd13ffe388d269d SHA-1: f302964e940d9e5ed40957c364835a4d941aae6c SHA-256: 6c206a410b30fb6cddc55028517a5933f7a2cacbaa89c12767d7a795518a4149
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 0.9995

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://mezovuduw.ru/strik?utm_term=pagana+and+pagana+mosby%2527s+diagnostic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5feaf0e16aa21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_6064cd282cb40.pdfIn PDF document text
    • http://memenakamawe.iblogger.org/carboxylic_acid_and_esters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_6048591e2011d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485172/normal_601e078845678.pdfIn PDF document text
    • http://fabifux.22web.org/74882408181.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_600f86d0e08d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_6028fd09072b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413693/normal_5fe0221a41db9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460048/normal_5fee4581ea359.pdfIn PDF document text
    • http://tevfikyuce.xyz/jowaruwrpjdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5fcbf2ca11879.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/xezulejeloruxawobemokap.pdfIn PDF document text
    • http://subbellassecret.com/bijanejemkqzw.pdfIn PDF document text
    • http://rivokalodusi.sportsontheweb.net/bienestar_emocional_osho.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/98931255291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://posawutuz.rf.gd/different_branches_of_social_science.pdfIn PDF document text
    • http://wimanugobupu.epizy.com/64174380204.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/toro_super_blower_vac_directions.pdfIn PDF document text
    • http://duxuramubot.epizy.com/net_date_format_day_of_year.pdfIn PDF document text
    • http://mesozitimilupi.epizy.com/hp_officejet_pro_8100_n811a_printhead_missing_failed_or_incompatible.pdfIn PDF document text
    • http://dolojivek.onlinewebshop.net/peritoneal_dialysis_procedure_step_by_step.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71D 5544 bytes
SHA-256: a367704a4c74d52fffeba6b8411f7b6706beba05f5eb7d6db30e7fa78260acc5
font_01_sfnt_off0000f9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F7 2920 bytes
SHA-256: ef8fac7fcaff41a91cbcd488a108d7d139a6eaea85abbdd861cbdf6c17ba94b5
font_02_sfnt_off0001058c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058C 11592 bytes
SHA-256: 2edd2ede7fcabdb56caf25efab3b860ab89d541ac993bc10d5199fcb25ec2aa3

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