Malicious PDF — malware analysis report

Static analysis result for SHA-256 427facbc9c61f8b6…

MALICIOUS

PDF

66.5 KB Created: 2021-02-24 03:14:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cbf4e70dff68a68a732a8580e391ca10 SHA-1: 2e5a42614e616382e2197c1d8d2c52c55ffe377b SHA-256: 427facbc9c61f8b6e69393ae5f3780cb03f8a2196161d8493c9473065a75552b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://maypoin.ru/wix?keyword=your+services+are+no+longer+required+email PDF link annotation
    • http://kalavar.xyz/wilevigifotofudixil3uao8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477138/normal_6010f460bb6cd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5ffd189f03e1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_6013191d4a23d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488135/normal_5fcf3e7b41ec9.pdfIn PDF document text
    • http://runolive.com/jacquees_feel_it_downloadan3t4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_6026c1aa31bca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413983/normal_600b8dc456667.pdfIn PDF document text
    • http://maporirunigis.22web.org/senamikarusidukofu.pdfIn PDF document text
    • http://fullpisetc.ru/jufogeveroworebewoxiemqjm.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/lsDggjg/1946569010.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/zarusegibitumet/27712538055.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/sipekozenosurefigon.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/what_qualifications_do_you_need_to_join_the_navy_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/fedijavene.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_off0000c9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B9 5408 bytes
SHA-256: 58cb3168e4993d574bbfb763bc1d33798fbce793cfc69bdf44a1e83f16dd71b7
font_01_sfnt_off0000dc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC05 9728 bytes
SHA-256: 46321e2b6ced9100d096a926093c4e334f41492a7e582cb11d6a2be0f1bf1c4f