Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0b6c7cd46f7ab7…

MALICIOUS

PDF

69.7 KB Created: 2021-01-16 03:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc898b7900262d2a609061f84993d783 SHA-1: 7711cecfee55a71620caf7c422c7d104382edcd1 SHA-256: 3a0b6c7cd46f7ab7878975ad99beaca3eb42faf8f96c20aed10e458ed76e58fe
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily garbled, suggests a lure related to a scholarship application, aligning with common 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://traffine.ru/123?utm_term=lettre+de+motivation+bourse+explora+sup
    • https://cdn.sqhk.co/togokitaz/phehjhe/formula_fun_racing_endless_car_games_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4481164/normal_5fd99a7118b45.pdf
    • https://cdn.sqhk.co/samigimas/ghSLsgi/bofolujozewebixovawenobiz.pdf
    • https://static.s123-cdn-static.com/uploads/4381082/normal_5fed33f858684.pdf
    • https://static.s123-cdn-static.com/uploads/4443608/normal_5ffd99644fa7b.pdf
    • https://cdn.sqhk.co/lafuwexale/2giQhe0/art_therapy_programs_florida.pdf
    • https://static.s123-cdn-static.com/uploads/4469103/normal_5fc9e7f68b055.pdf
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f8fdaf864a6e.pdf
    • https://site-1251700.mozfiles.com/files/1251700/catalytic_hydrogenation_lab_report.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/niwotipugonuvoz/blackberry_10_android_auto.pdf
    • https://s3.amazonaws.com/lekelepowo/easy_harmonica_sheet_music.pdf
    • https://s3.amazonaws.com/sirilagewuga/integrated_rate_law_worksheet.pdf
    • https://s3.amazonaws.com/fadadedezeker/15719161002.pdf
    • https://s3.amazonaws.com/gumegulaxi/32212501034.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_off0000d002.bin
68390e98f421c2ad73ba1e5eea7b3b62f08faaa052d7395b476d57e8933cd297		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD002 5316 bytes
font_01_sfnt_off0000e1ff.bin
6ad4e0f8d1acc1b761f00fa9f6a81303f8baea53865299b842404d95b46f6299		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 11836 bytes

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