Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c713de1b83f76d6…

MALICIOUS

PDF

123.5 KB Created: 2021-03-20 05:17:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d38e2a13213da9290c17e8b7592c23f SHA-1: 2953e2fe15165c786466e1bd390fae002c5c0fea SHA-256: 3c713de1b83f76d654ce023ef0894935a312b72436b2ed9bd153fdc3104dccf4
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it is malicious, specifically flagged as a phishing trojan by ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'code d hammurabi pdf'. The presence of numerous external URLs points to a phishing or credential harvesting attempt, likely leading to the download of further malicious content.

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://ponafet.ru/award?keyword=code+d+hammurabi+pdf
    • http://lebizifijafaxim.medianewsonline.com/tabaxonadoluz.pdf
    • https://cdn-cms.f-static.net/uploads/4454422/normal_60216a0e24a7b.pdf
    • http://keepmaxi.space/xokedifagikofetedojere1borg.pdf
    • http://pinenud.mygamesonline.org/63163380264.pdf
    • http://formverifiedbadge.com/bofozupuvul6lo9l.pdf
    • http://it50save.info/spotlight_room_escape_level_129rfbo.pdf
    • https://cdn-cms.f-static.net/uploads/4480756/normal_601a318d33ea2.pdf
    • http://bikelumonekodex.mygamesonline.org/poxumemorimoref.pdf
    • http://50offit.pro/2nd_grade_math_online_practice_testtnp8f.pdf
    • https://static.s123-cdn-static.com/uploads/4409801/normal_6005f73a114e5.pdf
    • http://figimumagoko.mygamesonline.org/how_to_see_my_rental_history_report.pdf
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5fcecc1b44542.pdf
    • https://static.s123-cdn-static.com/uploads/4489740/normal_5ff9bed77a84b.pdf
    • http://gopubewigofopa.iblogger.org/zolug.pdf
    • http://help-verifiedbadgecenter.com/ferrari_p80_c10bji.pdf
    • http://shtangelkipokupkiitd.online/metamorphosis_by_franz_kafka_summaryetcrz.pdf
    • https://cdn-cms.f-static.net/uploads/4392474/normal_60255633474fa.pdf
    • http://smeshnoykir.space/bestwap_movie_2015_free6rxui.pdf
    • http://lady-bug.club/macroeconomics_book_sandeep_gargzb4yx.pdf
    • https://cdn-cms.f-static.net/uploads/4415754/normal_60366814ef1e0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://moxuzaridob.onlinewebshop.net/89739021329.pdf
    • http://zolefajomiwa.rf.gd/how_to_use_edison_electric_pressure_cooker.pdf
    • http://nirobow.epizy.com/android_9_dark_mode_emui.pdf
    • http://wojalurume.epizy.com/physics_1_for_dummies_download_free.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_off0001a3a7.bin
95ee713781eac58835b3506f3d58edc15d08bd5e4df381fd2c3a8e46be3a5ec0
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3A7 5116 bytes
font_01_sfnt_off0001b4d7.bin
67dd85d1cc3513782dfe3a3910e3a8744b56321d731aa4ac501951f64b058bc9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B4D7 14844 bytes