Malicious PDF — malware analysis report

Static analysis result for SHA-256 0faf8d717ca97c09…

MALICIOUS

PDF

46.7 KB Created: 2020-11-05 08:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 4030f8aac9359c4a7bd3b5952c7e65d6 SHA-1: a2884076d7e2ec45349ef7ccf28af51092488305 SHA-256: 0faf8d717ca97c098578821a0a0df0591162e9b4b3d7473f621a5eb0a31df32a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/123?keyword=zombs+royale+discord+invite In PDF document text
    • https://lesofetu.weebly.com/uploads/1/3/1/3/131378838/rubemawowegu.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/punaxagavibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f9f7c04872ed.pdfIn PDF document text
    • https://xisudujerixaxir.weebly.com/uploads/1/3/4/5/134583325/1330557.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/moxekibupuru/jabukefomoveju.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/kazosijose.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/kolagamurivalevejesi.pdfIn PDF document text
    • https://s3.amazonaws.com/nozazodivin/cia_manual_of_trickery_and_deception.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/33984180337.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/personality_disorders_dsm_5.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/emoji_meanings_of_the_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/tavozetejotedogib.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_off000072a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A1 5344 bytes
SHA-256: bf0d9b8f7999e45a898473245926891a50a511b24a5cdfa9da38e3a544ea24a1
font_01_sfnt_off000084bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BF 12416 bytes
SHA-256: fa35a7a67330cf17f0d0a854ea42507214bb3fa9024148de45206d005116b51d