Malicious PDF — malware analysis report

Static analysis result for SHA-256 4880d5b96b7297da…

MALICIOUS

PDF

76.9 KB Created: 2021-02-11 16:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f0c2622d4cb50401326040b2480cda45 SHA-1: 70082496fb6fab932e839fc7e4b79fc8f357dc9d SHA-256: 4880d5b96b7297dadb0d65274dd55bbedb7816982bac60b132c2778a5be00612
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://jacksth.ru/wix?keyword=air+compressor+explosion+in+ships PDF link annotation
    • http://iceteas.space/maschine_software_crack9ldo8.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/oygdghg/23403541697.pdfIn PDF document text
    • https://zarimuxeve.weebly.com/uploads/1/3/4/8/134897304/kilelomogen_rejovalug_pojeguxefas_bulogemiwogusuw.pdfIn PDF document text
    • http://nakrutkavk.site/dibartolo_bakery_haddonfield5mvtx.pdfIn PDF document text
    • https://rofixuninapo.weebly.com/uploads/1/3/5/3/135313709/xeropopugitaf-rilani.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389821/normal_5ff8a2f70f167.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/ij6gh66/feruxosigef.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/34609828763dwf3r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501029/normal_5fee6fd0561c8.pdfIn PDF document text
    • https://rixeludabigadak.weebly.com/uploads/1/3/0/9/130969597/gamila_kitizibep_jibet.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/minaxigevani/riwinikozipozek.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/givironapel.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/australia_political_map.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/setip.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/gusozilowaluwuwunuse.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_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 5020 bytes
SHA-256: 88512fbe911750557b80d16ebe45b7687a8fa45500ae87ad2346502833f08d4c
font_01_sfnt_off0001036d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036D 10288 bytes
SHA-256: 820fb29160336c6710923eed36862b36eb817f50b0c720de06d25deaeaf4aaa8