Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa17b7e3b496993…

MALICIOUS

PDF

90.0 KB Created: 2021-03-05 02:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a46c4770d66abb708baa4a824323307f SHA-1: 341b4abc8a050d20a1e512727409fce80291377c SHA-256: cfa17b7e3b49699326e19b2156017502619c8a04bbf10fd283af5e5529d3e864
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8196

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/award?keyword=the+big+short+michael+burry+music
    • https://cdn.sqhk.co/batijuretak/JjiWj5h/marble_blast_2_mod_apk.pdf
    • http://gamukanemafutu.mywebcommunity.org/how_does_migration_and_cultural_diffusion_work_together.pdf
    • http://ig-support-service.com/315018488378nvyz.pdf
    • https://cdn.sqhk.co/ravusigi/ejdxhjc/university_of_montana_grizzlies_bookstore.pdf
    • http://mavpa.fun/material_science_and_engineering_bookyuahw.pdf
    • https://static.s123-cdn-static.com/uploads/4415309/normal_5fe0889c2f3a0.pdf
    • https://static.s123-cdn-static.com/uploads/4502906/normal_60000ee87bf7b.pdf
    • https://cdn.sqhk.co/dufelogaruf/VpgVhg7/connacht_minor_football_championship_2019_table.pdf
    • http://lelekelosutov.getenjoyment.net/werutazifowexe.pdf
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fe1a5e1eed04.pdf
    • http://vixemifojetinag.sportsontheweb.net/wobipijuz.pdf
    • https://cdn.sqhk.co/negapevu/hgDheus/president_protection_simulator_mod_apk.pdf
    • http://vertigoa.online/gelovaperulikibez9bs4.pdf
    • http://all-system7.xyz/65861712336zsoo7.pdf
    • https://cdn.sqhk.co/dobexesi/DptiayL/dragonvale_dawnbringer_dragon_breeding.pdf
    • http://rasudilikid.mywebcommunity.org/wexevim.pdf
    • https://cdn-cms.f-static.net/uploads/4366024/normal_600f13d4a7bed.pdf
    • http://detonic-romania.website/apka_me_apka_sitara_songry96q.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zemigiduwagafu/bose_soundsport_wireless_fr_android.pdf
    • https://s3.amazonaws.com/polexebuj/which_wendys_salad_is_the_healthiest.pdf
    • http://lijowavatajo.myartsonline.com/vifesebad.pdf
    • http://ligoroxenafof.atwebpages.com/lotus_cars_usa_facebook.pdf
    • http://jimarol.myartsonline.com/28601582657.pdf
    • https://s3.amazonaws.com/zuponefi/aircraft_ignition_system.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012475.bin
f4db285f67737671008a60444dbaf2c522254022c2ffe97753fd209e34c0af3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12475 5180 bytes
font_01_sfnt_off00013621.bin
d21e451e08123217a1b3fd0fb06d866d525ff0fbe04eb088b806e53bb532f951		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13621 10872 bytes
font_02_sfnt_off00015b1c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1C 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.