Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1374d4c812817ed…

MALICIOUS

PDF

62.6 KB Created: 2021-02-12 20:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d7a39df2b9a7f9e11e6d9cfe477d12fa SHA-1: 31c39e96e23880bdb91db421d85f0359dee697ab SHA-256: f1374d4c812817edb182d9de34ea4fa5599a0372e8bda082f498536299427646
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://baarspo.ru/123?utm_term=learning+to+see+pdf+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/lozuzupadis/6hjNibI/roblox_ragdoll_super_push_script.pdfIn PDF document text
    • https://kikitepolo.weebly.com/uploads/1/3/4/5/134514310/9548455.pdfIn PDF document text
    • http://maska-respirator.com/magic_chess_bang_bang_cheat_sheeto3hvg.pdfIn PDF document text
    • https://cdn.sqhk.co/dovumisiwe/IRgdbIC/60480431326.pdfIn PDF document text
    • https://vovikadu.weebly.com/uploads/1/3/4/5/134587732/7eed50bde544a.pdfIn PDF document text
    • http://instofficial.online/bionic_arm_templatetdmk4.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/K7igeVR/zombie_hospital_game_2019_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/dnbJh3o/slicer_software_for_android.pdfIn PDF document text
    • https://volasetabis.weebly.com/uploads/1/3/4/8/134879514/tikamudanuw.pdfIn PDF document text
    • http://indir-kazan.com/sogajunulevafesedanesajilgbpu.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/VhinE00/purev.pdfIn PDF document text
    • http://regvoolkim.website/gezironuriwagubugixanavel5qvy.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/ziwuvijevo/agile_testing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/dojavazepevokudin.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/vorewokarinuwutunazefazes.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_off0000b8a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8A5 5360 bytes
SHA-256: 5c8eeb730c31aab4ab2ee30c2d535dece208dd811a7cf9559263926078a91d82
font_01_sfnt_off0000cab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB9 9756 bytes
SHA-256: 2f2ff5165ec945561a2b6538569198048fdafb430a6380f87e5fbd9bd29ab66e