Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e2292a240b586b1…

MALICIOUS

PDF

85.0 KB Created: 2021-03-15 10:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a036aed76b2c0c48a9f8b36b56738f7f SHA-1: 30575adcd493fe3c193ab0c44bac44292d3bf1a7 SHA-256: 0e2292a240b586b1e7162ceeee8b414b0d1287244ee2b57029df0e44def2a97b
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is flagged as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The embedded URL likely serves as a lure to download a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • 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
  • 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://midufefew.ru/wix?keyword=ckz+origins+mod+apk+2.0.1
    • https://cdn.sqhk.co/vabilafibalu/ajiMdGN/avatar_full_movie_123mkv.pdf
    • http://zuragaretezi.iblogger.org/sasedobiwanemajopikit.pdf
    • http://botumudasotap.iblogger.org/what_is_grounded_theory_in_sociology.pdf
    • https://static.s123-cdn-static.com/uploads/4485823/normal_5fef46e9076c1.pdf
    • https://cdn.sqhk.co/kumotuxijufu/ieU0ghh/sebastian_maniscalco_subway_run_it_through_the_garden.pdf
    • http://gozatelaji.22web.org/16870406259.pdf
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5fd963a6137ca.pdf
    • https://cdn.sqhk.co/jowowibow/hhbhgif/ding_employee_appreciation.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cc25c010-639c-4b9d-ac6e-5ae0f939478c/34261689803.pdf
    • http://gusagikatu.rf.gd/zabakilakawukurenizo.pdf
    • http://vewomani.rf.gd/formal_ways_to_address_in_spanish.pdf
    • https://1cf095b7-1d29-4152-b82c-7733cf7ba0c7.filesusr.com/ugd/c1de29_df9da39c5c1e41b08d9be4fc77066922.pdf?index=true
    • https://74df6fe0-557b-4e47-8461-f2df536053d0.filesusr.com/ugd/4dcf4e_3aeb3282fc7e4bca980c63f07968f370.pdf?index=true
    • https://s3.amazonaws.com/midaguvimabof/nimaretojokoto.pdf
    • https://s3.amazonaws.com/xalexojaxipud/aprendizajes_clave_primaria_2018.pdf
    • https://s3.amazonaws.com/xukirizugukugi/diablo_trinity_t1000_tunes.pdf
    • https://uploads.strikinglycdn.com/files/643b29ef-6423-43c2-9597-5eee43a4dce6/how_to_use_a_chefs_choice_300_knife_sharpener.pdf
    • https://s3.amazonaws.com/wuzalugiseto/maradona_malayalam_movie_theme_music.pdf
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_84b4b168bfc54dc8b83502af45c0dcb7.pdf?index=true
    • https://s3.amazonaws.com/sisaxu/smok_alien_update_guide.pdf
    • https://uploads.strikinglycdn.com/files/041e4597-70fe-41f0-a181-4340ac2699e6/75114670255.pdf
    • https://uploads.strikinglycdn.com/files/de059b8b-7128-43ec-965e-33b5f52d0aa5/65492179190.pdf
    • https://uploads.strikinglycdn.com/files/7e375e3c-1121-42fd-9995-57256b569195/how_to_ignite_electric_fireplace.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec63.bin
d9b558bfb6ffedc38bb3e15f1f5cf07cc4e60a8ad763b7ec4e2f48334709651d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC63 3016 bytes
font_01_sfnt_off0000f70a.bin
de204922f2cf4c0a175c3cf499da632b81963a52308801e40d82b555b8aff7b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF70A 5624 bytes
font_02_sfnt_off00010a1e.bin
579bd37c401450f423f16dac95a7e1b5ba16568a6cf88b118f29455c112c800e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1E 11264 bytes
font_03_sfnt_off000130e1.bin
e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130E1 16068 bytes

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