Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa286576869a734…

MALICIOUS

PDF

65.0 KB Created: 2020-12-23 18:30:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fd11beb472e3b5a7df30fb9c4422246 SHA-1: 553cfe239aceb1bf45a5ba424ad09e40b9670727 SHA-256: faa286576869a7342087001cf09889e84ec1380d1b7c5bef5370e960c2eeba93
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'chocolate castle cake decorating ideas' to entice users to click the malicious link.

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://trafffi.ru/strik?utm_term=chocolate+castle+cake+decorating+ideas+pinterest
    • https://cdn.sqhk.co/wezopexa/hfTihhL/45890179776.pdf
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8765fed6bb2.pdf
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5f9857cb4b429.pdf
    • https://cdn-cms.f-static.net/uploads/4386095/normal_5f8fb0983e9c0.pdf
    • https://cdn.sqhk.co/tuponapalab/hjpjahd/karibik_kreuzfahrt_mein_schiff_2021_mit_flug.pdf
    • https://cdn.sqhk.co/zokasejiz/Ejeqjgh/pufelojidelakogupomabewe.pdf
    • https://cdn-cms.f-static.net/uploads/4370543/normal_5f94a94917623.pdf
    • https://cdn.sqhk.co/xibumediw/jggNijN/ultimate_wolf_simulator_2_free_apk.pdf
    • https://cdn.sqhk.co/wubumeze/b2jjThc/hope_for_paws_rescue_reviews.pdf
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5fb59af1680b0.pdf
    • https://cdn.sqhk.co/nebuneduzib/2gfdgdM/dragon_nest_mobile_guide.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/safago/77431958993.pdf
    • https://uploads.strikinglycdn.com/files/940ef853-f433-41b2-b91b-6bf1a9f11dcb/7385845797.pdf
    • https://uploads.strikinglycdn.com/files/f8093478-1907-4374-9184-b68130bc3156/fugubiroburolulepo.pdf
    • https://s3.amazonaws.com/mefadedosuw/tejuruxijaponaxel.pdf
    • https://s3.amazonaws.com/rudelazifizuvo/counter_strike_1._6_warzone_uptodown.pdf
    • https://s3.amazonaws.com/juzewojavomofew/negisos.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_off0000c25f.bin
5f3161021734049aa08ce14afaea9e50104238cdf34e200433f64fbbeee5d488
pdf-font-stream PDF embedded font (sfnt) at offset 0xC25F 5304 bytes
font_01_sfnt_off0000d45e.bin
8f8375c36a186de1b35505beebb88aade4d9ff3427805e5fd6d11e4f6f3545a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD45E 10128 bytes