Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c086124cca2618d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-01 13:39:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f7d376ef62e1fe544fc2a5dc5021514 SHA-1: 4a187fd48ea2720bd22a67778ac8a8011b3b8c1b SHA-256: 5c086124cca2618de116b5e770912b6eaef023ca3aca708b3cfff8229ae44d3c
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL and numerous other URLs point to potential phishing or malware distribution sites. The document body, though heavily obfuscated, suggests a lure related to service manuals, consistent with phishing tactics.

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://seumenha.ru/wix?keyword=vintage+snowmobile+service+manual
    • http://tradestaroffice.com/88792927705ywkwt.pdf
    • http://community-day.ru/second_hand_corrugated_iron_sheets_for_saleksxas.pdf
    • https://cdn.sqhk.co/muresogus/4ibpkgj/smash_bros_switch_used.pdf
    • https://cdn.sqhk.co/tumowara/GiiiCWe/battle_souls_guide.pdf
    • https://cdn.sqhk.co/xurajalijok/jhifidM/23702961124.pdf
    • http://omshop.space/bees_saal_baad_movie_480ps1xvw.pdf
    • https://cdn.sqhk.co/gepumenujeme/giheP05/maromogogi.pdf
    • http://ritikutoxukor.22web.org/tepobojabixoveserujo.pdf
    • http://zumubexupon.22web.org/beat_maker_go_free.pdf
    • https://cdn.sqhk.co/masezupusi/e0KwigX/90869672565.pdf
    • https://cdn.sqhk.co/fegadosijete/hgggKic/53848758225.pdf
    • https://cdn.sqhk.co/jivazufevi/f9Nahdo/duwas.pdf
    • https://cdn.sqhk.co/dubutemaruxu/7jj7FOb/59982445718.pdf
    • http://foyou.store/shiva_cartoon_tinyjuke_nety1aia.pdf
    • http://pokemonrivals.online/has_it_ever_snowed_in_the_summer_in_ohioqrq6u.pdf
    • https://cdn.sqhk.co/niserutom/oSeih8r/sijudasojexujapet.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://lozufoxozaniso.rf.gd/acsm_cpt_practice_test.pdf
    • https://s3.amazonaws.com/wunupalezozerud/best_water_filter_for_home_consumer_reports.pdf
    • https://s3.amazonaws.com/ruzaganog/75647318643.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_off0000da8c.bin
fb67b9e3b2eafbab4d49134600aa3fbf773451f5e2c66475a5a26b8db4853fb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8C 5256 bytes
font_01_sfnt_off0000ec71.bin
41e99bc3e8961376276aed5471916a0a1f6e4f3c0f9aa009878f9b6cf58c7189
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC71 15048 bytes
font_02_sfnt_off00011a81.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A81 4324 bytes