Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d910a73495b76a8…

MALICIOUS

PDF

45.4 KB Created: 2020-11-07 23:54:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: b677f49abacf6008327f5ed1e083c062 SHA-1: 4b5d5ada19123a961837551c8aa3a1681f4b9133 SHA-256: 0d910a73495b76a8803f1c20dcdb89ec494c72f6121f8b7f24c69077034c4b89
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffe.ru/aws?keyword=still+star+crossed+series PDF link annotation
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/1037332.pdfIn PDF document text
    • https://posajegodat.weebly.com/uploads/1/3/4/4/134477503/meverowakip.pdfIn PDF document text
    • https://wilunozuwi.weebly.com/uploads/1/3/4/4/134432110/rewupu.pdfIn PDF document text
    • https://nubukagogurug.weebly.com/uploads/1/3/4/4/134495847/risisu.pdfIn PDF document text
    • https://nikokitigo.weebly.com/uploads/1/3/4/5/134500207/e9abf9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zapawex.files.wordpress.com/2020/11/kuzegisawam.pdfIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/zowomoxazev.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/92886021772.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/er_words_final.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_off00006f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 5036 bytes
SHA-256: 8c28abcfcf06e7d98531a0511a21958b1f132ea7b2cf22fa843e541f9a678ee3
font_01_sfnt_off00008055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8055 11892 bytes
SHA-256: a75e9bcd5a5cf18410edfd420cb6eb7a9a5ea15a52108b76ad520a4c240670af