Malicious PDF — malware analysis report

Static analysis result for SHA-256 44157557b6c09563…

MALICIOUS

PDF

69.8 KB Created: 2021-02-19 08:01:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: da79a84f042cc4d0ad6cefb82461cb73 SHA-1: 2984c09c6a14b0be8aee4522db1bfcf7dcffe61c SHA-256: 44157557b6c09563335a9f2d85f279c7ff6528cc71cf4b58822b0373908d2516
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://jacksth.ru/strik?utm_term=flaxseed+meal+recipes+for+breakfast PDF link annotation
    • http://best-ital.fun/arlo_pro_battery_charger_manual9nwpz.pdfIn PDF document text
    • http://pumutug.iblogger.org/best_match_for_cancer_woman_yahoo_answers.pdfIn PDF document text
    • http://solenaxusa.iblogger.org/31818073180.pdfIn PDF document text
    • https://butabefuje.weebly.com/uploads/1/3/1/4/131437434/beweti.pdfIn PDF document text
    • https://getivafet.weebly.com/uploads/1/3/5/9/135960962/9028295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410191/normal_6015309ad4ffa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467278/normal_5ffbd21d701c6.pdfIn PDF document text
    • https://vawosikajoj.weebly.com/uploads/1/3/1/4/131438279/7374506.pdfIn PDF document text
    • http://otshelnik.net/4023553518ldzl8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kudefem/seliguzokejigekev.pdfIn PDF document text
    • http://segudufarus.epizy.com/free_adobe_after_effects_christmas_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/kimoxodizuwamobo.pdfIn PDF document text
    • http://kulagotano.rf.gd/free_coreldraw_templates_for_brochures.pdfIn PDF document text
    • http://newabef.rf.gd/pagagutuxim.pdfIn PDF document text
    • http://kedaxesipuwid.epizy.com/bohemian_rhapsody_sheet_music_free.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_off0000d2ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2BA 5528 bytes
SHA-256: f6d176774ef8d5c05a0f432dc8831e67e24a4b3a59c8d5b93a079c05694508fe
font_01_sfnt_off0000e575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE575 10920 bytes
SHA-256: d7136b39f0434696eb7cefc424fae0ae0683fbe979ea833bbbb380e63314d2df