Malicious PDF — malware analysis report

Static analysis result for SHA-256 067fbf5c66ea43e9…

MALICIOUS

PDF

91.7 KB Created: 2021-04-06 18:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3455af0f1df75a167bce0f66f05ad117 SHA-1: 72abe8724ee8b1b060b944c536fa03735d7290e8 SHA-256: 067fbf5c66ea43e9cf25e13604fed698e60a56bff4dba8dd26c7a0a25d334907
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 identified as a phishing trojan. It contains an embedded URI pointing to 'https://xezojetit.ru/award?keyword=gothic+calligraphy+workbook+pdf', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'Gothic calligraphy workbook PDF'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=gothic+calligraphy+workbook+pdf
    • http://jogemijafiw.22web.org/call_to_remembrance_farrant_sheet_music.pdf
    • https://sopebanodi.weebly.com/uploads/1/3/4/0/134017095/e20b9b8.pdf
    • https://static.s123-cdn-static.com/uploads/4387924/normal_5fde2e5503b51.pdf
    • https://cdn.sqhk.co/zegegajugot/xjaDljg/perforated_sheet_metal_fence.pdf
    • https://cdn-cms.f-static.net/uploads/4381551/normal_605199cd1e4da.pdf
    • https://nesurufaratetud.weebly.com/uploads/1/3/1/4/131408203/bupobupanif.pdf
    • https://cdn.sqhk.co/tazuxalana/bhidOid/revolut_auto_top_up_not_working.pdf
    • https://static.s123-cdn-static.com/uploads/4367294/normal_5ffb4b164e799.pdf
    • https://cdn.sqhk.co/badaxiloru/jehdgfc/cowbellpedia_2019_questions.pdf
    • https://xopisamu.weebly.com/uploads/1/3/0/7/130776659/lanos_mapasur_madidutuwete_rodapusizegag.pdf
    • https://static.s123-cdn-static.com/uploads/4454694/normal_60036dedaf6ba.pdf
    • https://cdn.sqhk.co/kozuvurop/QsjbhiZ/87896371984.pdf
    • https://beziremisolexew.weebly.com/uploads/1/3/4/6/134656792/waxapalogabitifu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gimusatis.rf.gd/kamus_bahasa_arab_amiyah_saudi.pdf
    • http://tuwafexom.epizy.com/attu_tamil_dubbed_movie.pdf
    • http://nutajowaga.rf.gd/jowulofuwelepefe.pdf
    • http://lutubipejor.rf.gd/twerski_addictive_thinking.pdf
    • http://jezuwujitek.epizy.com/william_blake_art_gallery.pdf
    • http://sulorunak.rf.gd/penetration_of_bituminous_materials.pdf
    • http://dilabopitomosif.epizy.com/fapozobavekugeni.pdf
    • http://zoxogonewa.rf.gd/hp_deskjet_2544_setup.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_off000126b2.bin
50c80755a781118cc0af6503c5d39655a3c0cfc259ccb1cce941af70e46312af
pdf-font-stream PDF embedded font (sfnt) at offset 0x126B2 5668 bytes
font_01_sfnt_off00013a18.bin
731d30b29f6f396cb738a44bda1e411bb8b8a2a6292320529b3205368a2951bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A18 11092 bytes