Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7110ae961cc74c9…

MALICIOUS

PDF

72.6 KB Created: 2021-02-06 06:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2bbb9ecde1f9b621388925ab23e7b256 SHA-1: 5082c8c89652db97da76a79fc54ba449a97b1966 SHA-256: a7110ae961cc74c98242a0e5f6cb0b0e3d8d14b562ab269f0bc7d373567459d8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=right+ear+ringing+spiritual+meaning+reddit PDF link annotation
    • https://kevonixoxudunu.weebly.com/uploads/1/3/0/7/130775897/2171801.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/vhbjfxT/blockchain_technology_companies_in_usa.pdfIn PDF document text
    • http://sokuzise.iblogger.org/38509318016.pdfIn PDF document text
    • http://devgame.design/jejimilixemekiod4j6.pdfIn PDF document text
    • https://cdn.sqhk.co/tusifefovozu/mhilm13/dotokobetagoluv.pdfIn PDF document text
    • https://xidokuwu.weebly.com/uploads/1/3/1/4/131453793/aa601a31ce38aaf.pdfIn PDF document text
    • https://gigazubexu.weebly.com/uploads/1/3/4/6/134613152/makeripog.pdfIn PDF document text
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/sovotokotanin.pdfIn PDF document text
    • http://soldatskaya6.ru/piviwe6onv.pdfIn PDF document text
    • http://zajifokabatu.iblogger.org/lazalutuvazalumezi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_5fe9037f5ee00.pdfIn PDF document text
    • https://cdn.sqhk.co/fekurisakez/fijf2hc/xipuvaxazafasatuwofurusiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pukevekoba.rf.gd/coordinating_conjunctions_worksheets_4th_grade.pdfIn PDF document text
    • http://vikalasur.epizy.com/gazusuzelosajagavodamit.pdfIn PDF document text
    • http://valopuloti.rf.gd/99008732586.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_off0000df46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF46 5380 bytes
SHA-256: 73bb57a65c065d54b97c32d52deebe3a310992846c02d78b0022e8827b80501c
font_01_sfnt_off0000f16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16C 10608 bytes
SHA-256: 3147ce92ee7f2c7a8ba827c20a01cb115e88f807348349bbbe882ff25a670080