Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6c0347194962de…

MALICIOUS

PDF

79.8 KB Created: 2021-03-19 06:34:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a3fe97e29810a105505e5c8bfa97818e SHA-1: 9e299e56d0df34127f97cd7a6ad054e1bfd164ca SHA-256: ec6c0347194962de37e04610559b585a1862a4d13c3e6e31bc127f6db772663a
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 0.9998

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://dugedepap.ru/award?keyword=supply+chain+management+pdf PDF link annotation
    • https://cdn.sqhk.co/soxuvezosapa/aK0N5ig/rc_nitro_car_for_sale_melbourne.pdfIn PDF document text
    • http://raisinslabs.club/newagakasatima30jdq.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/plhiC7b/duxaxegu.pdfIn PDF document text
    • https://cdn.sqhk.co/jivobukafon/tW9jdha/goguxizam.pdfIn PDF document text
    • http://g2am2e.xyz/vosukuvebiwuzudmr9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453560/normal_60009f64bc6ce.pdfIn PDF document text
    • http://in-step.shop/76676199838tngi4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486054/normal_5fd30ca919e1e.pdfIn PDF document text
    • https://cdn.sqhk.co/nazujovo/5jchdDj/wwe_thunderdome_sign_up_free.pdfIn PDF document text
    • http://logawedulukudan.mywebcommunity.org/kibixitezolif.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/73089660050.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/31496925192.pdfIn PDF document text
    • http://kawasus.scienceontheweb.net/spanning_tree_protocol_configuration.pdfIn PDF document text
    • https://cdn.sqhk.co/kafosine/je5jcUa/dinigaxisejozabef.pdfIn PDF document text
    • https://cdn.sqhk.co/raxipopu/gcOeprR/8099618004.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://s3.amazonaws.com/baxegezivumi/alto_s_odyssey_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/zafazotawu.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/percy_jackson_hardback_box_set.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_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 5272 bytes
SHA-256: 70b92085890e043378d897c58d983b8bb1bca654a7c15772f98d36e2e6730ef0
font_01_sfnt_off0000ff88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF88 10712 bytes
SHA-256: ab4c2c21df0d9a707266da43572102251663c4ce7b8118449dd9192c1008afb8
font_02_sfnt_off00012427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12427 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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