Malicious PDF — malware analysis report

Static analysis result for SHA-256 02829e8e8a15fd1e…

MALICIOUS

PDF

78.5 KB Created: 2020-12-14 15:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3d656a0a65f392dc11e3054f8a91593 SHA-1: bf7df4956c9089d9ceb5a0ede5d851fdde55f679 SHA-256: 02829e8e8a15fd1e6892502acb7c9ad450949a909bcc5ecec6e3ef3ab2ed3f29
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, appears to be related to product setup instructions, serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=onkyo+skh-410+setup
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f8a31c8c8001.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/9868d89f-f3e2-43c8-87c2-0b46843d57e1/how_to_cite_bps_code_of_ethics_apa.pdf
    • https://s3.amazonaws.com/purawuma/pejozawatazutenogudazu.pdf
    • https://s3.amazonaws.com/nonabafat/rikemikux.pdf
    • https://s3.amazonaws.com/pirofopafu/vesizanozaxekuwu.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/best_song_pk_app_pc_free.pdf
    • https://static1.squarespace.com/static/5fc51282e9fc3622d53cd60e/t/5fca3327e4017829c174a300/1607086887296/95410541798.pdf
    • https://static1.squarespace.com/static/5fc13e7dd49dd12447366960/t/5fc566a67acac6192a779f62/1606772391483/29687871984.pdf
    • https://s3.amazonaws.com/sugowubuf/lekerigigojudufuwuxa.pdf
    • https://s3.amazonaws.com/wuniku/exercices_verbes_avoir_et_etre_au_present.pdf
    • https://s3.amazonaws.com/xopugup/evenflo_manual_breast_pump_bottles.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb8d.bin
a037149648e5e58181540d857fa5b110af6540cba418d0ed8e82be7c5ed4aaa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 4908 bytes
font_01_sfnt_off0000fc59.bin
dd0a0da4bb31e30d4bb8566f9b0355117573553a40cca5ef78f5ef310f0ff1da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC59 10300 bytes
font_02_sfnt_off00011f31.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F31 4324 bytes

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