Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc947290551ab267…

MALICIOUS

PDF

36.2 KB Created: 2020-11-06 20:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 161f509e8325015d5ec5dac829c09e8c SHA-1: 8fba8af18a39b628edbe01d1bb045d36bbfa9ada SHA-256: bc947290551ab267ed1d0583eaf1578a2f57ea9d1594b59156faebaf3c8e2b0f
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://trafffi.ru/aws?keyword=turtle+topper+20+gallon PDF link annotation
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/b99b8d7f0cc01.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/5292014.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/bedijefedogiw-zadedisifi.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/301de4db5cf050.pdfIn PDF document text
    • https://bisudika.weebly.com/uploads/1/3/4/3/134366448/53fc3dc8cab18.pdfIn PDF document text
    • https://piziruzebizopu.weebly.com/uploads/1/3/4/3/134350425/6541390.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vinojuxilopi.files.wordpress.com/2020/11/wafiza.pdfIn PDF document text
    • https://zimoverux.files.wordpress.com/2020/11/24183651238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cacebc13-d8bb-4e06-a391-fb84c810de6a/10932504045.pdfIn PDF document text
    • https://fupajore.files.wordpress.com/2020/11/92889661065.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/50939477702.pdfIn PDF document text
    • https://dawadin.files.wordpress.com/2020/11/14711918979.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_off00004bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCF 5032 bytes
SHA-256: 21ef5c18c39c174b3cb93bd0bc8a9a525d930c773d68c8ea59d2a118647b9302
font_01_sfnt_off00005cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CFD 12404 bytes
SHA-256: abe6875658b06c3bb3e6f46350123676e2d714c2b1f51c37bfa3d93369c52439