Malicious PDF — malware analysis report

Static analysis result for SHA-256 974bf4d5f89aeea9…

MALICIOUS

PDF

68.5 KB Created: 2021-02-03 11:08:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c667eb9bd8b6124796d5006ede80ba48 SHA-1: 9909ba7298fe001bb43ef586a1f63793c0a975fe SHA-256: 974bf4d5f89aeea93c2018df1518c0fc5dfcda55e8418a8501a28f877702221c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=wine+label+design+templates+free PDF link annotation
    • http://domen3.club/xukatupejeg64nyw.pdfIn PDF document text
    • https://roxewakedenal.weebly.com/uploads/1/3/1/4/131483042/kapetozogadedobut.pdfIn PDF document text
    • http://tronreserve.online/lego_marvel_super_heroes_3_release_datechsga.pdfIn PDF document text
    • https://linebabeta.weebly.com/uploads/1/3/5/3/135317009/9806211.pdfIn PDF document text
    • http://petersikdar.com/32139235985iru7e.pdfIn PDF document text
    • http://runolive.com/vavotirotofikc80h2.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/6bb03.pdfIn PDF document text
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/7639032.pdfIn PDF document text
    • http://copyrights-notices-helps.com/aws_welding_handbook_volume_2_free_downloadz6ygy.pdfIn PDF document text
    • https://lodofimedama.weebly.com/uploads/1/3/4/3/134327961/rijereka_jituzolelifivor_lawewujigim.pdfIn PDF document text
    • https://dapijapivabug.weebly.com/uploads/1/3/4/3/134338952/4637783.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/wifukedot/bhojpuri_video_picture_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/annabelle_comes_home_trailer_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/fadiralovefu.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/corporate_finance_exam_cheat_sheet.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_off0000ced5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED5 5516 bytes
SHA-256: 8f0c82882d4f502fff3040c7816096bb75f5f0a669c878205c4664c23cb13016
font_01_sfnt_off0000e186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE186 10452 bytes
SHA-256: 224a66922b052caf84735bb0ea6d89580891ce19c783e6afb482ffcca598b18c