Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2fc78f79bfe51f…

MALICIOUS

PDF

77.7 KB Created: 2021-03-16 11:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7634bff2aaa9997ec675db4a3cb1dad8 SHA-1: 580f4ed8b473c055fd626ec56861344afc865b99 SHA-256: 0e2fc78f79bfe51f6b613012d4b8ceee1c124b4de8dcd2552f61d034c7a80eea
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by multiple engines, including ClamAV and an ML classifier. It contains numerous external URIs, with a primary focus on `https://soxebez.ru/123?utm_term=aptoide+apk+indir+tamindir`, suggesting a phishing or malware distribution attempt. The PDF structure and embedded links indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/123?utm_term=aptoide+apk+indir+tamindir PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447906/normal_604915e4064f4.pdfIn PDF document text
    • http://about-igsupport.com/kemesukazakveue.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/what_software_works_with_cricut_expression6yho3.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/369289486704q78k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_601f038b65b1e.pdfIn PDF document text
    • https://cdn.sqhk.co/kenoramof/jBFhcjT/bass_pro_shops_near_me_now.pdfIn PDF document text
    • http://creditpm.com/17596027044zw5jh.pdfIn PDF document text
    • http://itrom.fun/39580265823xyiqt.pdfIn PDF document text
    • https://cdn.sqhk.co/loxexafetivu/cmcje5m/godus_treasure_temple_repair.pdfIn PDF document text
    • http://hotel-engels.ru/rolegotogajigowexibowawir4xn.pdfIn PDF document text
    • https://cdn.sqhk.co/niririga/gpHhggE/25575528592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_602071b589ad3.pdfIn PDF document text
    • https://cdn.sqhk.co/mipemoku/ojsicoC/zadinijigekikimava.pdfIn PDF document text
    • http://silkhfig.bid/virginia_woolf_poetry_foundationecw5o.pdfIn PDF document text
    • https://cdn.sqhk.co/fezavomol/fsmhjgc/90549952267.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/03533336-76cf-4e97-ba5c-1dab8f5f77c1/example_of_ap_biology_lab_report.pdfIn PDF document text
    • http://vudasuluwiviwaj.rf.gd/yuri_on_ice_sheet_music_flute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33526687-8b29-42a2-b1a9-3a40301634fe/pathfinder_advanced_players_handbook.pdfIn PDF document text
    • http://takefaluzimun.rf.gd/35_hp_vanguard_oil_capacity.pdfIn PDF document text
    • http://fodudedokuka.rf.gd/41942137831.pdfIn PDF document text
    • http://boluwugotesuni.rf.gd/ap_module_grade_7.pdfIn PDF document text
    • http://davozipakit.rf.gd/xodumugawedubaruju.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_off0000e7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FB 4948 bytes
SHA-256: 6400656e409bcbfccfdd8854b055c79551d02b6f86737f3aeb46911fd0de87f6
font_01_sfnt_off0000f8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BF 15828 bytes
SHA-256: f2899d0108b085b3122f87a29ee243930201ea68a28da6806f9dae50d228801c

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