Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73ceb7a9eac1008…

MALICIOUS

PDF

78.2 KB Created: 2021-05-15 08:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71e063365560cfafb250cf0ab9668cd2 SHA-1: d6ca721c0086e2874d02e7b8e11fe56a4a6477fa SHA-256: c73ceb7a9eac10080b51fcd5ec18bbd73ba7e09e565bdb32be5d8b74101dc4de
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'soxebez.ru', which is likely the malicious destination. The document body, though heavily corrupted, contains text related to 'super mario 3d land 3ds cheats', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/strik?utm_term=super+mario+3d+land+3ds+cheats
    • https://cdn-cms.f-static.net/uploads/4378834/normal_60518ad9e42a2.pdf
    • http://nonuxuzelubit.22web.org/functional_properties_of_carbohydrates.pdf
    • http://kugaraginoja.mypressonline.com/18702495992.pdf
    • https://static.s123-cdn-static.com/uploads/4377380/normal_5ffe92d3d4b04.pdf
    • https://cdn-cms.f-static.net/uploads/4393188/normal_5fd33561a930a.pdf
    • http://jabisoj.22web.org/kimimebegovib.pdf
    • http://memujinirenupa.iblogger.org/50944619897.pdf
    • http://pusewuvi.medianewsonline.com/53689841481.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jatetamuwabaton.rf.gd/how_to_remove_fuel_shut_off_solenoid.pdf
    • http://vatezajis.rf.gd/dazigopidiniwuvozux.pdf
    • https://uploads.strikinglycdn.com/files/77ce154b-0192-48d5-b037-a9e06ed6f3ed/22495944106.pdf
    • http://supovopekowo.epizy.com/27049715773.pdf
    • https://uploads.strikinglycdn.com/files/e3fa9763-4cad-422c-9a52-971fa0d990dc/cross_lan_cable_color_code.pdf
    • https://uploads.strikinglycdn.com/files/7cdb81c8-9e87-42fb-bc55-73d774507af9/15642600345.pdf
    • http://sonasekofuxix.rf.gd/acestream_engine_apk_fire_tv.pdf
    • http://bisodusar.epizy.com/lejiwuwasunizojaruba.pdf
    • http://radisabuvaba.epizy.com/7247080158.pdf
    • https://s3.amazonaws.com/gosete/12040329555.pdf
    • https://uploads.strikinglycdn.com/files/d515e2f6-c481-49c1-8e39-939d8973d5ea/what_is_reset_button_in_router.pdf
    • http://reduxaxu.epizy.com/causes_of_rheumatoid_arthritis.pdf
    • https://s3.amazonaws.com/xunilukegez/oneplus_7_android_10_root.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_off0000e642.bin
b9c4c72b03c3e7fe1e800055cd97e1d098edac76ab664dceeecc5135c5f7d28e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE642 5580 bytes
font_01_sfnt_off0000f909.bin
c04848afb5beca6944a8b43575b9b70f5c20177d54787387c5cd8d6cc3d3e60f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 15996 bytes