Malicious PDF — malware analysis report

Static analysis result for SHA-256 670f1558bb932d72…

MALICIOUS

PDF

73.2 KB Created: 2021-01-25 09:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 8a2c3df9a10156dca592ff617ebfef1d SHA-1: adfd2751805bdc8d6a085db1631654f2fcdaa062 SHA-256: 670f1558bb932d724377bdd213c2368c9e93082c2f8f7cd1f8ac37755e74aa5e
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/shook?utm_term=car+crash+tuesday+morning PDF link annotation
    • https://mejavepo.weebly.com/uploads/1/3/1/4/131438157/zutimazanireko.pdfIn PDF document text
    • https://cdn.sqhk.co/muwesisokim/fn41jbQ/harris_jr._james.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/984ef6c4e9.pdfIn PDF document text
    • http://vatasefapulik.iblogger.org/capture_one_pro_12_full.pdfIn PDF document text
    • https://rusekawavupor.weebly.com/uploads/1/3/4/0/134096427/padozulafuvibogel.pdfIn PDF document text
    • https://jenazikefu.weebly.com/uploads/1/3/4/0/134017187/7249260.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/vekeronutuzon.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/mikibetiv/algebraic_identities_class_8_questions_and_answers.pdfIn PDF document text
    • http://nelifofufotilep.epizy.com/31314719149.pdfIn PDF document text
    • http://wisiver.rf.gd/three_year_projection_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/bollywood_movie_all_song_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/advertising_design.pdfIn PDF document text
    • http://jotikovan.rf.gd/gloomhaven_scenario_book_german.pdfIn PDF document text
    • http://kubazemaxem.epizy.com/fosezefuleji.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/civilization_android_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_off0000e26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26B 5328 bytes
SHA-256: 78ce11e8f3d8d1f901099e62852747a5e0ce2a374d042a6f0752f2c937507f4e
font_01_sfnt_off0000f462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF462 10488 bytes
SHA-256: 0de752b9fc9815c41cf9ff90a54b0a3e1f699c5fb1b1e570191624bba4c32335