Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f62c6159a9eae9c…

MALICIOUS

PDF

73.4 KB Created: 2020-12-25 10:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0c8e3dafb8e8973ce3bfa57517fbf9b0 SHA-1: e12afb721001fa2f1281c8cd69edfe94ae9664ea SHA-256: 2f62c6159a9eae9c3fee48ea2fd47aaa7cdba6825fc2abb7e3a626e4b6378d0c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'la boite à merveilles pdf'. No scripts were extracted, but the PDF structure and embedded URI heuristic indicate an attempt to redirect the user to a malicious site.

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://traffine.ru/aws?utm_term=la+boite+%25C3%25A0+merveilles+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447487/normal_5fb589ffb6e73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f892e9841cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5f8d14cdb0ccb.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/cXbjes4/sims_4_doctor_career_deliver_baby_cheat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5fb5cd21c0d53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383561/normal_5fa3d95690e0d.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/roros-firanijegusik.pdfIn PDF document text
    • https://cdn.sqhk.co/zebusukef/4JU3jhn/rally_racer_dirt_abcya.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/alcatel_pixi_3_10_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae0d1463-51a0-46cf-9cd3-e7a10365969f/nezibelekogufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7dd627f-72d9-43f9-ad85-fb1258b43f63/gabex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/311b22d5-9539-4f76-a3bb-2c4065940415/13810584535.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/aptoide_for_android_6._0._1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f800b45-7a28-4f1b-a020-3305661a892c/26822270794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912500c5-494f-4405-8726-dd182ff602ce/eco_wood_treatment.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0D 5560 bytes
SHA-256: 20dcbb13bbbf700962c2180fb66f4d13e0b857e0a1191e8663032937a90b97e3
font_01_sfnt_off0000f159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF159 11952 bytes
SHA-256: cf21387d7a1dfee6c11cbbdc64f7f93499380785930637ea8c8407bb030a90c2

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