Malicious PDF — malware analysis report

Static analysis result for SHA-256 6103061d39a56d9e…

MALICIOUS

PDF

72.0 KB Created: 2021-02-16 23:27:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b0d8509460a3ec11769bf80c8de2db9f SHA-1: 780d271afec8d81d4ebddee3fcd13c23fffe1942 SHA-256: 6103061d39a56d9e31b3c8c73ebd07de9545f072280f646b154369ee35df588b
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://seumenha.ru/aws?utm_term=the+walking+dead+here%2527s+negan+board+game+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493201/normal_5ff337032d780.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/cphaghP/80s_retro_logo_maker.pdfIn PDF document text
    • https://voximarabot.weebly.com/uploads/1/3/1/3/131383255/wizakolide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_5fc620434716e.pdfIn PDF document text
    • http://chelamela.org/nosofoxorovezevezasavadfa27i.pdfIn PDF document text
    • http://replyua.site/counter_strike_condition_zero_deleted_scenes_apkhmfmg.pdfIn PDF document text
    • https://cdn.sqhk.co/bogabixexuja/4heLjem/94422575005.pdfIn PDF document text
    • https://riwusivi.weebly.com/uploads/1/3/4/9/134900433/gukarinavorisapejog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480397/normal_600f66b587ecf.pdfIn PDF document text
    • http://gnatural.space/kaspersky_antivirus_free_trial_for_androidlmn7s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475375/normal_5fec8e308d454.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375357/normal_5ff9f1eebc697.pdfIn PDF document text
    • http://summerita.fun/one_line_one_stroke_puzzle_gamek7d5y.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/jgjthad/7430776699.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/ggr8jf2/wunsch_gutschein_einlosen_amazon_funktioniert_nicht.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dcde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDE 5576 bytes
SHA-256: 5ada2628fc0eefd4aedb57d3f510e32c4be6e52824a9776d42846d12064e5b09
font_01_sfnt_off0000efcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCC 10156 bytes
SHA-256: 94710b711f2b80da587a604bbd574aa1732fe0aa5fc4f3c56dde864762eceddb