Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c4ea02bb6e89a4a…

MALICIOUS

PDF

71.3 KB Created: 2021-01-25 17:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 16e2a0912ac8e4cf1cd4075f93f4f4c7 SHA-1: ca694326d1ea821d37fb71f3c8f547eb90b93dad SHA-256: 5c4ea02bb6e89a4ae912deb6a1d021b096b794ae176f47b8228b13304baf28ae
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading further malware or visiting a phishing site. No scripts were extracted, but the presence of an external URI suggests a phishing or credential harvesting attempt.

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://trafffe.ru/123?utm_term=murray+riding+mower+electrical+schematic PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404745/normal_5fcf438542627.pdfIn PDF document text
    • http://melodabogaso.66ghz.com/91367250234.pdfIn PDF document text
    • http://bostpolamos.site/run_race_3d_mod_apk_download_apkpure8ec44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477626/normal_5fd3cb7813917.pdfIn PDF document text
    • http://futup.ru/tadolawiq6u3u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377112/normal_5ff354d63005f.pdfIn PDF document text
    • http://cmb-accueil.com/train_driving_simulator_games_3dnlpok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463560/normal_5fd87bfe12938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470683/normal_6004ef420952e.pdfIn PDF document text
    • http://cyberlife.store/kaloxofxltk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420610/normal_60044ea8b8b28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489586/normal_6000e6cc2a6fd.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/tokit/veritext_court_reporting_fort_lauderdale.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/door_lock_movie.pdfIn PDF document text
    • http://pejonoma.epizy.com/bashan_atv_200cc_manual.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_off0000d9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B2 5552 bytes
SHA-256: eb6a9e119c6e9b434ad9ab31f2a33cca8124b1bd3680032ec47f34bc737514b3
font_01_sfnt_off0000ec8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8D 10324 bytes
SHA-256: b6dca07345432fd497e69694c2dab64a29048308ba1f1bc3e936270507ae7dec