Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f060ee80ffac99…

MALICIOUS

PDF

83.0 KB Created: 2021-04-04 09:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e811bc54693e96d290edd61ed1c5173b SHA-1: 26e785f6b3697e44c387c59a4d2c60774331f3fb SHA-256: 74f060ee80ffac997cd793381dd13e1dbf4df7866bd564de91846b75e4397a69
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, disguised as a search result, likely leads to the download of a malicious application. The document body, though heavily obfuscated, contains text related to downloading an APK, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=dark+soul+coc+apk+download+latest+version
    • https://cdn-cms.f-static.net/uploads/4387241/normal_604e7e73664bc.pdf
    • https://cdn.sqhk.co/nejisakatok/HjguEbS/craftmaster_sofa_sectional.pdf
    • https://cdn.sqhk.co/jovowosifo/ohdegcj/arkansas_state_parks_map.pdf
    • https://cdn.sqhk.co/fosuzonarefi/gjejajj/recruitment_tracking_template.pdf
    • https://cdn.sqhk.co/sirejeforox/ghhpghj/tekobimizomizegizaxorozux.pdf
    • https://cdn.sqhk.co/sajunabinume/J4jfhfj/aggiornamenti_android_10.pdf
    • https://cdn.sqhk.co/karadirimose/GB5iebp/black_friday_tv_deals_2019_best_buy.pdf
    • https://static.s123-cdn-static.com/uploads/4478655/normal_600281a7c42da.pdf
    • https://cdn.sqhk.co/gogadibavuta/BlhdiiL/74370326190.pdf
    • https://cdn-cms.f-static.net/uploads/4404121/normal_605c2b1ac40f4.pdf
    • https://static.s123-cdn-static.com/uploads/4382418/normal_5fe4a4f76afd1.pdf
    • https://cdn-cms.f-static.net/uploads/4464722/normal_6055155182267.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/25a8b0b8-4056-40df-8ece-5f129d7919a0/is_a_drying_room_a_legal_requirement.pdf
    • https://uploads.strikinglycdn.com/files/c6f81b06-b9da-474d-bb1d-cfac479fe0f6/single_chamber_bat_house_plans.pdf
    • https://s3.amazonaws.com/timituvupame/xujoxa.pdf
    • https://s3.amazonaws.com/duzexefemosaxe/segodazajixevanudagolifax.pdf
    • https://s3.amazonaws.com/nigimul/diwejejomesunuvawu.pdf
    • https://s3.amazonaws.com/jasadavebaga/lavatalewojunalejum.pdf
    • https://s3.amazonaws.com/gotitibekovi/beckman_coulter_allegra_6kr_centrifuge_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1ef.bin
039514f047dc4204022578e31d4dc85e4d3cdad03730738d6fbbd9d0a06fbbf3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EF 5284 bytes
font_01_sfnt_off0001040d.bin
d9f96797a54aa890ffc864a62d0ee1bea369dc139b9f5922dbee51669d5f236a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 1796 bytes
font_02_sfnt_off00010c99.bin
6d2d3a777df7aed899a1e075f9a5d8f64798febb669d41aaaa1ecbbd2bd9da41
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C99 14940 bytes