Malicious PDF — malware analysis report

Static analysis result for SHA-256 0daf1eb7b2ec9d25…

MALICIOUS

PDF

73.5 KB Created: 2021-03-10 07:45:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 513c57c6c02ab952a3f56118849a6cdf SHA-1: 22ade31a4be4ea495701095c9fa880e98c5122ea SHA-256: 0daf1eb7b2ec9d2586f7b66278c160989167d766dc39465fdada4ae568c1cee7
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, indicating a high likelihood of malicious intent. The embedded URL 'https://nipisod.ru/123?utm_term=aambala+songs++inbam+pongum' is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to harmful content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/123?utm_term=aambala+songs++inbam+pongum
    • https://cdn.sqhk.co/sixojifez/ihicihF/rokejubesakutugatoseji.pdf
    • https://cdn-cms.f-static.net/uploads/4419637/normal_603aabae36ffb.pdf
    • https://cdn.sqhk.co/sokodajep/ic0wTG8/dunujuli.pdf
    • https://cdn.sqhk.co/videbamez/f1Xjfja/58074448451.pdf
    • https://static.s123-cdn-static.com/uploads/4366034/normal_60087ad8505ff.pdf
    • https://cdn-cms.f-static.net/uploads/4389127/normal_6011c72e72b0c.pdf
    • https://cdn-cms.f-static.net/uploads/4427287/normal_60412c3284a3d.pdf
    • https://cdn.sqhk.co/nixivezez/kHcjj6B/chinese_kung_fu_master_film.pdf
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5fc70896699a7.pdf
    • https://cdn-cms.f-static.net/uploads/4387929/normal_6030e9251dead.pdf
    • https://static.s123-cdn-static.com/uploads/4423428/normal_5ff2e520c9815.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fdb7c340-6b07-427b-bbf4-8d6b7a2b4735/romuletupavig.pdf
    • https://uploads.strikinglycdn.com/files/54a8e635-7f8b-429e-9eb3-2453029408ee/maytag_stacked_washer_dryer_manual.pdf
    • https://87164119-88a6-4d6d-a72f-b109cf2d88b9.filesusr.com/ugd/bd0a66_1760f40d5396489dbe950c7fe340fad0.pdf?index=true
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_fbc566e76ee34206b179755a963863a7.pdf?index=true
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_44148ac90a4d444ab9b653488944e3ab.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b02ae8b9-bdf4-4f87-b64f-0cf2f5d51eba/kipufuwagajuvama.pdf
    • https://uploads.strikinglycdn.com/files/5d895b67-332a-4f70-b767-af4e6faa0d06/the_onion_presents_our_dumb_century.pdf
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_e7f5c63ed0f14d438319413e81e2b242.pdf?index=true
    • https://s3.amazonaws.com/dapekufoxiraku/wilakasatav.pdf
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_8db8767bcf1d4575bc0e02cd5c92d9d7.pdf?index=true
    • https://s3.amazonaws.com/mixanaz/3d_anatomy_apk_cracked.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_off0000e3bd.bin
544fabd385f4b51b17f594cf4f6c92d0602809a75bf581de091e9c5055b48539		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BD 5172 bytes
font_01_sfnt_off0000f53f.bin
6e6a6c246e289b84ae3759dcb3815070767eb5e7d2c0112f1f21991613c1505b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF53F 10436 bytes

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