Malicious PDF — malware analysis report

Static analysis result for SHA-256 03de51039f037c46…

MALICIOUS

PDF

78.1 KB Created: 2021-04-24 23:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3210b7606770e696b5174db2ffb679a8 SHA-1: 2bc386dcb737fd655674ce7c0a397f928acbd18e SHA-256: 03de51039f037c460a25cecbd5f17973beda471ad0a45029439dbe6d38486b38
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that is likely part of the lure. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, possibly for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=how+to+play+philips+blu+ray+without+remote
    • https://cdn-cms.f-static.net/uploads/4374685/normal_60404bc6e5fa9.pdf
    • https://cdn-cms.f-static.net/uploads/4458404/normal_6068f49b24bd9.pdf
    • http://stnold.com/5130835976842ftz.pdf
    • http://kmikaerfs.ru/first_alert_carbon_monoxide_detector_battery_changelip2m.pdf
    • http://ligumiju.iblogger.org/the_counterfeiters_2007_full_movie.pdf
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fe6607ca5752.pdf
    • http://kompledom.com/2000_honda_accord_v6_service_manual69bau.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gugujis.epizy.com/59922952869.pdf
    • http://pikizopesoru.rf.gd/30789684371.pdf
    • http://lajuloverebob.epizy.com/commando_2_movie_full_hd_720p.pdf
    • https://uploads.strikinglycdn.com/files/3378cb2b-9369-4a8f-a34c-b419d675398b/cognitive_bias_definition_webster.pdf
    • https://uploads.strikinglycdn.com/files/7580cc15-db1b-4dbe-ad37-c7b55a1e0602/beethoven_violin_sonata_10_analysis.pdf
    • https://uploads.strikinglycdn.com/files/08da8ae7-2bba-4b0c-8ed1-4a29851ddb3e/the_formula_universal_laws_of_success.pdf
    • https://1237a3da-0b33-4890-9ba9-974507bf2590.filesusr.com/ugd/3e0cb9_fafee80ec5a24bbb9d5141aa32bb3330.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9206198c-bece-418a-a172-641cb3a2c2ab/26509276206.pdf
    • http://raxaxeve.rf.gd/how_to_join_pakistan_army_medical_corps_after_mbbs.pdf
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_52c466ef78e14cbfbe308e052a2eef2b.pdf?index=true
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_840169663e12411ebb752895d099ea2f.pdf?index=true
    • http://xewaditina.epizy.com/zitupabojiwane.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1f0.bin
9994c38507e473ef5ec6c6f61c71db2307f0f84a50f729df4c247dea66084e61
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F0 5356 bytes
font_01_sfnt_off00010404.bin
5e89a2fff6044499366e16969d51be014bbe1d353919ebf4e116df64cff7e7c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10404 10912 bytes