Malicious PDF — malware analysis report

Static analysis result for SHA-256 21eb976823f7d39a…

MALICIOUS

PDF

76.1 KB Created: 2020-11-30 17:38:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 238746459f3c7f9a7bddee3e5c11c725 SHA-1: d2ddaf6cf55143fc9f5d6c7352a79eae1c14357d SHA-256: 21eb976823f7d39a59e752250fc60b2a1dcc464142c9b84ceffc98b3696b6d67
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'trafftec.ru', which is likely a malicious domain used for further exploitation or credential harvesting. The document body, though heavily obfuscated, suggests a lure related to 'Apc smart ups 750 manual pdf'.

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://trafftec.ru/aws?utm_term=apc+smart+ups+750+manual+pdf
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5f89d67594fad.pdf
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8964bfb4495.pdf
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5f87b8ebf35a3.pdf
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5fabdf5002372.pdf
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5fbf161f63dd0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/woxojuxafopuv/jazusuvegedigoxerar.pdf
    • https://s3.amazonaws.com/gewisetug/distance_time_graph_practice_problems_worksheet.pdf
    • https://s3.amazonaws.com/bitajemisajoz/93810414784.pdf
    • https://uploads.strikinglycdn.com/files/b3a5b731-19a4-4b9e-b319-d4a5507166b0/claim_data_warrant_worksheet.pdf
    • https://s3.amazonaws.com/jazamerijekufol/easy_but_confusing_riddles_with_answers.pdf
    • https://s3.amazonaws.com/mejigavukolu/59077039928.pdf
    • https://s3.amazonaws.com/fulosobezur/chapter_13_the_respiratory_system_worksheet_answer_key.pdf
    • https://s3.amazonaws.com/liluvad/8339625385.pdf
    • https://s3.amazonaws.com/penale/dungeons_and_dragons_monster_manual_3.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_off0000e6e9.bin
dcc38ae0d18081038ea63babd4eeda1d4ddb7c3c4dd79dbbe09740652275c212		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E9 5636 bytes
font_01_sfnt_off0000fa03.bin
cb52d7529327c4232a7629f12561a2bb4964c213565297e29c6465b9788191b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA03 13768 bytes

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