Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aac8ce92b5fac18…

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 01:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: caf186b7737ac654ef6a30719a71113e SHA-1: e03e8dca09f63b2d89fe807133f0be624be2b759 SHA-256: 1aac8ce92b5fac182c6ec61e16e867105c7d13500375cd6f00040c143263d542
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/123?utm_term=sportline+pedometer+330+change+battery PDF link annotation
    • https://cdn.sqhk.co/dijowasedop/girhgTM/banana_walnut_monkey_bread.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/Xjdjc6G/80764773284.pdfIn PDF document text
    • http://tawexowupa.22web.org/vubezixoludupanifutonov.pdfIn PDF document text
    • http://madusotiju.22web.org/99644920405.pdfIn PDF document text
    • https://cdn.sqhk.co/bokirebi/llidqgd/human_fall_flat_online_multiplayer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gufemazibafi/ftSjcJH/54261142391.pdfIn PDF document text
    • https://vururera.weebly.com/uploads/1/3/4/4/134493513/2767087.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/gijhCjd/kotepas.pdfIn PDF document text
    • http://xivokosu.iblogger.org/apa_format_citation_website.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/NjbcigP/little_dragon_heroes_world_sim_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://terofiwewu.rf.gd/marvel_cinematic_universe_free.pdfIn PDF document text
    • http://degepedafapuf.epizy.com/bixosapiredivi.pdfIn PDF document text
    • http://valogaberel.rf.gd/asymmetric_information_microeconomics.pdfIn PDF document text
    • http://wedizakur.epizy.com/24459060784.pdfIn PDF document text
    • http://xefivaz.epizy.com/ariston_washer_dryer_combo_reviews.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_off0000dc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC24 5960 bytes
SHA-256: 31074e47c79cbc1849fe052777a790dd384a84b72c43b79f52db03017448ef42
font_01_sfnt_off0000f041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF041 10796 bytes
SHA-256: 34da6b18c368862d9716e71df09be79768dfa7e44337880c580a9fdc40f6f505