Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2edc7651e64938b…

MALICIOUS

PDF

88.5 KB Created: 2021-04-24 02:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 06dcf853b8f44b369a674272db7d3145 SHA-1: 93c78328e8e598f0858761d192cda6c1b25a3aba SHA-256: e2edc7651e64938b1b8cd409cf8dab0b446c72f70e92e1bb8e7f6c7319fe2369
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-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://botokaw.ru/strik?utm_term=who+was+the+first+great+western+philosophy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4527747/normal_6033f49a8e1ba.pdfIn PDF document text
    • http://trylait.pro/dejisuzidi74hs.pdfIn PDF document text
    • https://kuvobawodamelis.weebly.com/uploads/1/3/5/3/135350379/2bf29e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_600913ac06687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426828/normal_6026bf0878768.pdfIn PDF document text
    • http://afracheat1.xyz/2258457616iqv6t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471114/normal_5fc777f77d7e2.pdfIn PDF document text
    • https://ziduxibuzogegu.weebly.com/uploads/1/3/4/0/134012824/jekavabipefukobi.pdfIn PDF document text
    • http://volosaty100.xyz/xuwev9ryz7.pdfIn PDF document text
    • http://moymagazin.xyz/13845162086izbt5.pdfIn PDF document text
    • http://lotsmen.com/moxezalapv7qqr.pdfIn PDF document text
    • http://vezdesami.ru/945343952973b9yb.pdfIn PDF document text
    • http://uablog.website/22521732757qqfc1.pdfIn PDF document text
    • https://febewizonobuwom.weebly.com/uploads/1/3/4/3/134311996/lufukimew.pdfIn PDF document text
    • http://profaudit32.ru/norcold_fridge_quit_workingwu0r2.pdfIn PDF document text
    • http://varnisvakq.ru/teninazibiwagugudesawk92d.pdfIn PDF document text
    • http://saudiautoinsurance.com/pivobuli511zk.pdfIn PDF document text
    • http://leafester.online/wim_hof_method_breathing_through_nose_or_mouth0m9ss.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/aa45b836-60cd-49c8-9169-83f25589510a/fowediwiresorivegus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75e26e9-17b2-4af2-a4f5-24201bfd1efb/operating_budgets_within_a_master_budget_include_all_of_the_following_except_the.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df9f5b6b-1024-496a-8bfd-9a0a503ed021/82489178624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d3a4fd8-b1bc-483f-8c16-0570e265891d/pijobodazamaxi.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_off00011afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFA 5372 bytes
SHA-256: 691e571ecf8bcbeb3ad8d3368f224aecc2fef5704347f0464ad846b8aecfcffc
font_01_sfnt_off00012d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5F 12448 bytes
SHA-256: 50aacc3a5378593bcd8e6aaa8e4b33bdb122b29b4f57a058ddd333af8220b15e

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