Malicious PDF — malware analysis report

Static analysis result for SHA-256 878a3c0fd9c0582b…

MALICIOUS

PDF

81.5 KB Created: 2021-06-01 01:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 628efb65d64a75eccf06142f832e7d63 SHA-1: 18315c477ce120e8d8ad2b0a1928bff407af7fa5 SHA-256: 878a3c0fd9c0582b2349c9672bfd935a01476851a65834eabe2bfd5c8f87a2eb
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 flagged as a phishing trojan. It contains an embedded URI pointing to 'garglob.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to 'Pulp Fiction' and 'Google Docs', consistent with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://garglob.ru/pbw?utm_term=pulp+fiction+full+movie+google+docs
    • https://static.s123-cdn-static.com/uploads/4390057/normal_6007cf1830107.pdf
    • https://static.s123-cdn-static.com/uploads/4373779/normal_5fcd67bd2aec3.pdf
    • https://static.s123-cdn-static.com/uploads/4475563/normal_5fee6ba2364fa.pdf
    • https://bafiredevidif.weebly.com/uploads/1/3/1/3/131384403/7583271.pdf
    • https://cdn-cms.f-static.net/uploads/4417139/normal_602b43b948344.pdf
    • https://cdn-cms.f-static.net/uploads/4412159/normal_602124e65320c.pdf
    • https://static.s123-cdn-static.com/uploads/4367927/normal_5fed38cebb144.pdf
    • https://cdn-cms.f-static.net/uploads/4503533/normal_603716bd8faa7.pdf
    • https://nazesuku.weebly.com/uploads/1/3/1/3/131379506/9898081.pdf
    • https://cdn-cms.f-static.net/uploads/4459025/normal_60410385ed5c0.pdf
    • https://cdn-cms.f-static.net/uploads/4454807/normal_602aeaedd3106.pdf
    • https://cdn-cms.f-static.net/uploads/4420608/normal_6058fcd48733f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zezimin.pbworks.com/w/file/fetch/144411648/butterfly_knife_part_template.pdf
    • https://uploads.strikinglycdn.com/files/6b5cdd0e-05b8-4b2e-bf3f-90e1dac0611c/kalyug_baitha_mar_kundali_ringtone.pdf
    • http://xalanupuzewo.pbworks.com/w/file/fetch/144421581/93543761029.pdf
    • https://uploads.strikinglycdn.com/files/5b1c39ba-efbf-449f-b2eb-a8794fd29ef5/iron_man_2_game_download_for_pc_ocean_of_games.pdf
    • http://kedetuwi.pbworks.com/f/nuwexiwamudukisafelux.pdf
    • http://niwomif.pbworks.com/f/the_scorch_trials_screenplay.pdf
    • https://uploads.strikinglycdn.com/files/02070be1-7b86-417e-a169-9093fdf46b51/34043256154.pdf
    • https://uploads.strikinglycdn.com/files/8778844b-c731-458b-89cf-304dac207e0a/lenovo_xt1902-3_price_in_india.pdf
    • http://garigor.pbworks.com/f/14402404478.pdf
    • http://viluxese.pbworks.com/w/file/fetch/144428874/xotofilurajuseboximapi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8d2.bin
58e8c369f794e3739fb9c18b8e8c951b48d6c5feccc701cbbede78b94807230e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D2 5228 bytes
font_01_sfnt_off0000faa1.bin
d883e0458e44de7395fa3ca3b7872f96bcf96a85c75e65a676499ca26d8d63db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA1 11284 bytes
font_02_sfnt_off00012037.bin
a943b407406e9f5e36148968b7786bac63721f32f01db237a99488cf668c113a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12037 16468 bytes

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