Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d6566cd1a82207…

MALICIOUS

PDF

79.1 KB Created: 2021-04-28 20:55:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c70cc7b76a369ea59f7010a40c0ba9d6 SHA-1: 180f50d393c5ebaefa0ccea5354b77b531f733d0 SHA-256: 95d6566cd1a822073479c91105947e9b1cf8a1a1c698ccd5e0f291415f775865
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URIs, with one specifically identified as a link farm on disposable hosting, strongly suggesting a phishing or scam attempt. The ClamAV detection and ML classifier further confirm its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=the+boy+who+harnessed+the+wind+true+story+ted+talk PDF link annotation
    • http://artistichomesolutions.com/19378203655j0sln.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/650076821485xub7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457573/normal_6021965ea2609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475194/normal_603a98204167b.pdfIn PDF document text
    • https://cdn.sqhk.co/temududote/cgeEMc8/zombie_highway_drivers_ed_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vinusubat/hirz9ig/download_game_throne_rush_mod_apk.pdfIn PDF document text
    • http://beremoter.online/whistle_blowing_policy_and_procedurevgw2k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405687/normal_5fca4fab279f0.pdfIn PDF document text
    • https://cdn.sqhk.co/sefibenip/ahhINpe/jomuvegogunenokidonefa.pdfIn PDF document text
    • http://mexicotop.xyz/machiavelli_book_the_prince1fdoi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446496/normal_603de7a097f9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375342/normal_5fe187ba50a1b.pdfIn PDF document text
    • http://iminn.ru/cartoon_love_wallpaper_hd_zedge0adx7.pdfIn PDF document text
    • http://kolamudeluxom.iblogger.org/50127383017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f72b89be-0fa6-41ee-8162-331329ef78ce.filesusr.com/ugd/95089d_ba36462ac3864e4bbec812a5d383d734.pdf?index=trueIn PDF document text
    • http://jifigazanovew.epizy.com/beatles_mono_albums.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a0c2377-8316-45b2-88cb-e8f7ac3fcf6e/gebum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8719567-3db3-447f-bf76-70a3b0d418ba/ford_mustang_mach_e_price_in_india.pdfIn PDF document text
    • https://41c240d9-b4af-4f88-8fa4-2a41cce3a287.filesusr.com/ugd/01bc73_142d5a65b8c144269fdbdfad557a41ee.pdf?index=trueIn PDF document text
    • http://vumafovixono.rf.gd/43984664538.pdfIn PDF document text
    • http://zumijuxuv.epizy.com/95031009907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3197f678-0343-49c0-848f-3807146a3ffd/sununurifis.pdfIn PDF document text
    • http://paxinariseb.rf.gd/the_throne_of_fire_series_book_1.pdfIn PDF document text
    • https://6c9aa500-f8d9-42a6-b8a4-5b3c562bbfc3.filesusr.com/ugd/543886_3ddd0cdc5d09431b8c3f8fd8aeeb54d0.pdf?index=trueIn 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_off0000f5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BF 5260 bytes
SHA-256: 1318d27d0cb5915443dab4b676617b7f253656a3be8bb7e0df14733ee79b8e3c
font_01_sfnt_off000107aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AA 10900 bytes
SHA-256: 02bdc2689c243bb2f34e671314fce30b257912039c911796b976dc05983b79ff