Malicious PDF — malware analysis report

Static analysis result for SHA-256 8438ad14ee8aad03…

MALICIOUS

PDF

83.2 KB Created: 2021-04-05 10:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f93fdb630b250181d2efdcaca7904a06 SHA-1: 76f7a9b1d1fe4897eb86d5989e72d46936882258 SHA-256: 8438ad14ee8aad03e8d6fa90fcd3bd01ffddbf9e1302ac1104bb2d6ea6fbd056
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site or download a payload. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit vulnerabilities or trick users into visiting a harmful URL, aligning with phishing or malware distribution 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://ponafet.ru/123?utm_term=beamforming+transmission+mode
    • http://rulabepotinujeb.mypressonline.com/automotive_spice_in_practice_surviving_implementation_and_assessment.pdf
    • http://webpost.pro/the_sandman_dc_comicsnugae.pdf
    • https://cdn-cms.f-static.net/uploads/4369328/normal_604af53664cb0.pdf
    • http://homeolimp.com/piwetuxixewogabogapinorqmxqd.pdf
    • http://lalat.space/dopabejumorejilaxutdn8h.pdf
    • https://fivefijoxiwu.weebly.com/uploads/1/3/1/4/131453543/wosek.pdf
    • https://cdn-cms.f-static.net/uploads/4499021/normal_603a50ca82858.pdf
    • http://1xbet-registr.site/5401818350xc2yv.pdf
    • https://fazafunapogaz.weebly.com/uploads/1/3/4/1/134131986/wilepixowe.pdf
    • https://cdn-cms.f-static.net/uploads/4401732/normal_604693d9d95c1.pdf
    • http://goromeo.club/how_long_should_you_stretch_before_lifting_weightswzde4.pdf
    • https://lasebotoxuxuxir.weebly.com/uploads/1/3/4/7/134729765/bibeviwilorabuxub.pdf
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6059d8059a18d.pdf
    • https://xajupodesuze.weebly.com/uploads/1/3/1/3/131380723/sosava.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/8f44733b-6f82-47e2-836e-4bf25e7c84b0/zomojelut.pdf
    • https://uploads.strikinglycdn.com/files/250243c0-7f2b-46ec-8d43-1998f1d839f8/vadotidutomadobaret.pdf
    • http://teropisarazo.myartsonline.com/arthritis_knee_exercises.pdf
    • https://uploads.strikinglycdn.com/files/f952ba4e-bfcf-4502-a5bc-a59925dfe2e4/fifty_shades_freed_watch_online_free_youtube.pdf
    • https://uploads.strikinglycdn.com/files/276d6ca9-a587-4816-86bf-dfd7fe85c8a6/60601048615.pdf
    • https://uploads.strikinglycdn.com/files/bbe7a673-474a-4387-80ba-47b381c2a326/fundamental_theorem_of_calculus_part_2_calculator.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_off0000f8b9.bin
34047121614b134496ca9c4086a81b4cd286dd323b745e5055cfe2da5df49a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B9 5032 bytes
font_01_sfnt_off000109b7.bin
4832591ee9edb072e624419d03b62d110119974ba3a1db7c9aebb44eaf0011dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109B7 11540 bytes
font_02_sfnt_off00013103.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13103 4324 bytes

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