Malicious PDF — malware analysis report

Static analysis result for SHA-256 1563cd41ad3fda5e…

MALICIOUS

PDF

61.0 KB Created: 2021-01-02 12:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6d20d378612bf9a676c06dec5fab044 SHA-1: d884736f6f2687b2e50f1b86a9ebd3d1a273f636 SHA-256: 1563cd41ad3fda5efe113a592216d297cfdc275dea933eeb8e1477b15ab3bbdc
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely the malicious destination. The document body, though heavily obfuscated, appears to reference 'Raid shadow legends beginner guide', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=raid+shadow+legends+beginner+guide
    • https://cdn-cms.f-static.net/uploads/4488330/normal_5fe8c8a5b5631.pdf
    • https://cdn-cms.f-static.net/uploads/4381095/normal_5fb2d89c823ca.pdf
    • https://cdn.sqhk.co/vigefifobot/ek9tjdW/candy_movie_1968_parents_guide.pdf
    • https://cdn-cms.f-static.net/uploads/4422386/normal_5fb02e16692a3.pdf
    • https://cdn.sqhk.co/birenejar/Vp2fEf6/golizolelovune.pdf
    • https://cdn-cms.f-static.net/uploads/4427094/normal_5f9fb50ff33f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e7a1c905-0083-4bba-a01f-776959953911/40537553862.pdf
    • https://uploads.strikinglycdn.com/files/02d88aa4-36ff-4ea8-a1dd-cae30bfead6d/unblock_club_penguin.pdf
    • https://uploads.strikinglycdn.com/files/ada965a7-5570-4d82-b975-b1e667f9f5e7/what_does_elo_stand_for_in_overwatch.pdf
    • https://uploads.strikinglycdn.com/files/e723b9d0-f299-4826-82d6-255fc672db12/mitexinovudotinaperamomev.pdf
    • https://uploads.strikinglycdn.com/files/92cea9dd-bdb8-428c-b921-e0a53e5b44dd/halo_master_chief_collection_xbox_on.pdf
    • https://uploads.strikinglycdn.com/files/155edc2c-5960-4255-adfc-f15efc543e21/62999783112.pdf
    • https://uploads.strikinglycdn.com/files/a00620ab-4e43-4ea4-a040-2be3d56750d3/eminem_lose_yourself_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/2c359d67-be82-4b7e-8fe7-5096466d998a/average_rate_of_change_worksheet_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/b3cce435-afdc-41b1-a5f2-f97471fe15ad/79250153502.pdf
    • https://uploads.strikinglycdn.com/files/bebc8d50-9720-4a4a-b20d-4fc137533909/mass_lobster_association.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_off0000b40b.bin
cb51d7c300d56594ece943bbb8cf7477f646b17ec1c6be43463be7e7d04344f7
pdf-font-stream PDF embedded font (sfnt) at offset 0xB40B 5324 bytes
font_01_sfnt_off0000c634.bin
fb1a4ea38c35829b489a25005af303d941014c4112213e0d8f107dbbdb9cecb5
pdf-font-stream PDF embedded font (sfnt) at offset 0xC634 9700 bytes