Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f590af252835f4c…

MALICIOUS

PDF

69.4 KB Created: 2021-02-05 23:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5fc3e3d4a3d9a1d7a248bdb28ffa407e SHA-1: d2d10b8b1baf022666fabe6809c701319c6d8b0e SHA-256: 0f590af252835f4c711f7659c1bdc97f6dccaf3519b756b696164f13ef53eeb0
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://druttle.ru/wb?keyword=fallout%204%20bobblehead%20location%20guide PDF link annotation
    • https://jufukakoxojopop.weebly.com/uploads/1/3/4/3/134317893/2706096.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/fQXk59U/xakaselemupagelatukuz.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/H1jhkmq/polureburij.pdfIn PDF document text
    • https://cdn.sqhk.co/pewovixosafu/Nhd2tia/41437146954.pdfIn PDF document text
    • https://cdn.sqhk.co/depadukat/1w7PWjb/affirmative_action_definition_ap_gov.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/tukemuxonalon.pdfIn PDF document text
    • https://xowogibudul.weebly.com/uploads/1/3/4/4/134446034/647436.pdfIn PDF document text
    • https://tedalemom.weebly.com/uploads/1/3/5/3/135398197/nozexolup.pdfIn PDF document text
    • https://fusikejasuk.weebly.com/uploads/1/3/0/8/130874124/lenitamitanelo-vumezopizobekos-roxafolid.pdfIn PDF document text
    • https://fewibobukuk.weebly.com/uploads/1/3/5/3/135309281/9633267.pdfIn PDF document text
    • http://jazajozem.iblogger.org/tewigamepet.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/setaxilitozuko/mowod.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/app_store_updates_not_ing.pdfIn PDF document text
    • http://jaxilikujo.rf.gd/platform_5_cheadle_hulme_offers.pdfIn PDF document text
    • http://linakagiwabofa.epizy.com/phonics_activities_book.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_off0000d45e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD45E 5112 bytes
SHA-256: 0f3d57e3a7d075212c1360fd108600bad5d735261650565fd52682ecae119544
font_01_sfnt_off0000e5c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C6 10220 bytes
SHA-256: 43715dbf23e36158f42e6837110c11698d05e9df6d72f25b3a997f681530202e