Malicious PDF — malware analysis report

Static analysis result for SHA-256 15f46050f2558b2a…

MALICIOUS

PDF

79.3 KB Created: 2021-04-05 02:01:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 14ecdbd6ff836e6d82e4e754d703a719 SHA-1: af0b73bf559798ff51639a1013fb3bcd8efb8ce7 SHA-256: 15f46050f2558b2abb47c19ed9320b706ec96680ebc72aa91ed6388681608517
126 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious sites. The presence of external URIs and the 'link farm' heuristic strongly indicate a phishing or malware distribution attempt.

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://ponafet.ru/strik?utm_term=manual+saitek+x52+pro+espa%25C3%25B1ol PDF link annotation
    • http://kekewawoxugar.sportsontheweb.net/18565190493.pdfIn PDF document text
    • http://konolux.medianewsonline.com/caltech_campus_map.pdfIn PDF document text
    • https://cdn.sqhk.co/mivuxakadu/ib4hije/74378290690.pdfIn PDF document text
    • http://zibikudupe.mywebcommunity.org/all_animals_name_with_picture.pdfIn PDF document text
    • https://cdn.sqhk.co/xaveredero/gfsidic/31068608575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_6037ffbe485d4.pdfIn PDF document text
    • http://pepariravifaza.getenjoyment.net/easy_friendship_bracelets_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/hhItgfr/30469075854.pdfIn PDF document text
    • https://cdn.sqhk.co/tawakejolap/hibFxij/rokomapimepifam.pdfIn PDF document text
    • http://kuvenumine.mygamesonline.org/33263853496.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414331/normal_5fec99768c31c.pdfIn PDF document text
    • http://zatoxuvisovapuf.sportsontheweb.net/zimaredisuwege.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465393/normal_5fe4f16d75fd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_6013190916582.pdfIn PDF document text
    • https://cdn.sqhk.co/teganipuputu/1ji1fgQ/zepotiluzinalovevasika.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gegilifopom.myartsonline.com/sojopoxumewujanorukul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/768a76f7-cc9b-416f-a6a1-6934fe85f728/how_to_be_a_combat_rescue_officer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee6c2e32-fb32-480e-ae54-1043265691af/how_to_replace_alternator_on_2002_jeep_grand_cherokee.pdfIn PDF document text
    • http://forojiwimudobo.atwebpages.com/how_to_setup_canon_pixma_mg2522_wireless.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/football_manager_2018_mobile_apkpure.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_off0000f42c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42C 5420 bytes
SHA-256: 88323ec20cffffd2f694f6eaa899f1a27bac7658939a1203868f62efcc48617c
font_01_sfnt_off00010677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10677 12144 bytes
SHA-256: 9a4de28d7877ea5f471298ba7cf513c30ea22b8bcd61b1bcda6c2eb4ba7b266b

Open this report in the interactive analyzer, or submit your own file for analysis.