Malicious PDF — malware analysis report

Static analysis result for SHA-256 336fa94cb2f25414…

MALICIOUS

PDF

73.5 KB Created: 2021-02-12 19:34:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 75ef02354e453c7b1e28208fbec5b0e6 SHA-1: 4d7e75532a00814f78fb3f0fb5e415151beb06a3 SHA-256: 336fa94cb2f254148d9afe03835cb2f30870ce106e396846a4bb428ba7257eb2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=quit+smoking+e+cigarette+free+trial PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383322/normal_5ff76df075e24.pdfIn PDF document text
    • https://mipolapepel.weebly.com/uploads/1/3/4/3/134395859/vabive.pdfIn PDF document text
    • https://dajilifu.weebly.com/uploads/1/3/4/8/134891154/xerofozeginawob-matemizusevemi-woxifomofogawuw-fefimitozelufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366327/normal_5fdff84d62d3b.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/dCjfvia/3992733408.pdfIn PDF document text
    • https://numesenara.weebly.com/uploads/1/3/1/0/131069843/e729ff60d982b6.pdfIn PDF document text
    • http://goduvide.22web.org/word_cloud_template_for_powerpoint.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/icjfojt/nick_chubb_fantasy_value.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/hjcuuic/little_alchemy_cheat_sheet_life.pdfIn PDF document text
    • http://lemufarora.22web.org/api_management_power_bi_template.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/7292137.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gedonisezif.epizy.com/sta_112_elementary_probability_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/rasuvufij.pdfIn PDF document text
    • http://wasaxotudulolo.epizy.com/bfa_leveling_guide_110-_120.pdfIn PDF document text
    • http://dimarujevetuvif.epizy.com/microsoft_sql_server_2000_licensing_guide.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_off0000e284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 5324 bytes
SHA-256: 5c3b5463d67d8b39bd987e66453cc550c457bb9e4e47c502cbb3910470278bae
font_01_sfnt_off0000f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 10788 bytes
SHA-256: 0c6920f4c91701bc85660d40997349f8979e6e059861a738a38d2c2996812c0b