Malicious PDF — malware analysis report

Static analysis result for SHA-256 42dc907668b8e0f1…

MALICIOUS

PDF

71.9 KB Created: 2021-02-17 21:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1afc9f1d7d6965c6b8fcafe7f58793c1 SHA-1: 2418e8940054c5744a504997d9f5522716af7889 SHA-256: 42dc907668b8e0f1c60fa81fb149de6b8b5944f6ca05e28c5e93feac75156660
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=what%20are%20electric%20type%20pokemon%20go PDF link annotation
    • https://cdn.sqhk.co/ruwopazeg/iegiBgf/feudalism_game_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/towojutal/hc3ZjdI/pubg_name_font_generator_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/gjTvSii/didagoxiwafe.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/IufghiC/big_semi_trucks_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/cgighid/144699515.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485943/normal_5fde90a71ba3f.pdfIn PDF document text
    • http://lujadexezusunam.22web.org/74135476399.pdfIn PDF document text
    • https://cdn.sqhk.co/fubafonu/gjyjhia/dirop.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/4AbiiuY/hallmark_movie_checklist.pdfIn PDF document text
    • http://setifol.66ghz.com/sajosi.pdfIn PDF document text
    • http://benunirudid.iblogger.org/5843918033.pdfIn PDF document text
    • https://cdn.sqhk.co/tisorobew/micmMic/24530211018.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://galojuxutiwas.epizy.com/46734115447.pdfIn PDF document text
    • http://fowasabitafal.epizy.com/75468744241.pdfIn PDF document text
    • http://dojopugoput.epizy.com/tenajunenupisanovobiwur.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_off0000dd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD33 5348 bytes
SHA-256: da418594a5a47652b18498358e4f30b92e3d6adeeca2ef28808d74ae275267e4
font_01_sfnt_off0000ef56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 10436 bytes
SHA-256: 23843b7fd9d240b32404b1024e8d05959d9b06fb8d4913c58c8538ba09c165a3