Malicious PDF — malware analysis report

Static analysis result for SHA-256 08642fcdb5106494…

MALICIOUS

PDF

70.3 KB Created: 2021-02-10 04:28:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 78b1a4af286a3b1c7c83e73d8d5a6562 SHA-1: 9f101ae16f99c808169e6e6e8182e8ca47484b78 SHA-256: 08642fcdb510649458ecf36f86f93becfd205f87447bbf840a38ecb2e1715ead
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/wb?keyword=latest%20ppt%20templates%20free%20%202019 PDF link annotation
    • https://cdn.sqhk.co/vugomupuzisa/4hg7jb0/geometry_dash_unblocked_games_76.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/lgehfqO/59830391403.pdfIn PDF document text
    • http://ridunculus.com/45927991169b15vk.pdfIn PDF document text
    • http://hook-up.fun/worksafe_nz_accident_investigation_form3f95a.pdfIn PDF document text
    • https://nugibunexediga.weebly.com/uploads/1/3/0/7/130740514/8374221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427295/normal_601b39eb0abd4.pdfIn PDF document text
    • https://pukelubaluwo.weebly.com/uploads/1/3/4/7/134741361/3782b060cd4.pdfIn PDF document text
    • https://noresewikikizi.weebly.com/uploads/1/3/1/4/131453465/vetumubezuxeg.pdfIn PDF document text
    • https://cdn.sqhk.co/mexovaru/flqYjbn/stick_zombie_games_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5fec7b95e2da3.pdfIn PDF document text
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/romogelegipetu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486772/normal_5fdb35d96f057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_600fc186152be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5ff7a5e357bda.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/tokafanawa/mibon.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_off0000d4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EE 5468 bytes
SHA-256: ec5f3a0ff5224db0b96c9c52536be4d5b5de82bd840ef2bd9b9d6f48caabb7e5
font_01_sfnt_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 10756 bytes
SHA-256: 76421918d47599a97cbb21ba1efe1a9661b365f59e3cf8ecdd2c76ac402aa549