Malicious PDF — malware analysis report

Static analysis result for SHA-256 770e68851e3acac3…

MALICIOUS

PDF

76.9 KB Created: 2021-03-31 03:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a51eb1428e41f171aea3bdd5186408a SHA-1: d6009d2ecf62a5a4179cde2367737f39b57d6243 SHA-256: 770e68851e3acac32464ec215eb30ec679afb779af5c39540edb851a91f74c20
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to a phishing domain, suggesting an attempt to trick users into visiting a malicious website. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

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://zajinet.ru/award?keyword=gl+accounting+process+pdf
    • https://cdn.sqhk.co/ranofakon/Wjj4jeP/57841031430.pdf
    • https://cdn.sqhk.co/nexoratuxi/jgjgX9h/66898250306.pdf
    • https://cdn-cms.f-static.net/uploads/4505102/normal_6054696719307.pdf
    • https://cdn.sqhk.co/tumowara/ie1sheG/art_therapy_programs_colorado.pdf
    • https://cdn.sqhk.co/gidenateg/dhfhajb/dragon_pets_game_facebook.pdf
    • https://static.s123-cdn-static.com/uploads/4453885/normal_6002fe0b01613.pdf
    • https://static.s123-cdn-static.com/uploads/4480399/normal_5feb2e6c61819.pdf
    • https://static.s123-cdn-static.com/uploads/4452386/normal_5ff9508cb067d.pdf
    • http://kitujozonu.22web.org/duvagol.pdf
    • https://cdn-cms.f-static.net/uploads/4367911/normal_606395b80d607.pdf
    • https://cdn.sqhk.co/jotapepikota/e3gjZMb/bounce_tales_java_app.pdf
    • http://xunidar.iblogger.org/why_is_my_nespresso_milk_frother_flashing.pdf
    • https://cdn.sqhk.co/pibilebomek/IPhiygi/dab_android_car_radio_apk.pdf
    • https://cdn.sqhk.co/gixotagokezu/iaU6idG/forklift_daily_checklist_log_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kamaxunavag.epizy.com/79875302856.pdf
    • http://baxajuzurajuj.rf.gd/los_pasos_del_proceso_de_la_investigacin_social.pdf
    • https://s3.amazonaws.com/vuliwisuwig/brawl_stars_mod_apk_v_15._169.pdf
    • https://s3.amazonaws.com/piradi/savage_worlds_cheat_sheet.pdf
    • https://s3.amazonaws.com/leteraxewe/fojor.pdf
    • https://s3.amazonaws.com/lekelepowo/mugalumegelujalu.pdf
    • https://s3.amazonaws.com/vofadoloves/project_report_on_foundation_in_civil_engineering.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_off0000ee5a.bin
9a9e79163317c977e5660adbf7807566477dbba874d6cd8351f50627c066211e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5A 5352 bytes
font_01_sfnt_off000100a6.bin
2d7eee2d034f3908f62e9846a4c3aecb3c65aa2294dd60042001fbd3feb43c4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 10756 bytes