Malicious PDF — malware analysis report

Static analysis result for SHA-256 30de90971a423612…

MALICIOUS

PDF

89.2 KB Created: 2021-06-05 02:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b278df17d363a9f17b0cf6da2a438a95 SHA-1: 517c164e7a75e632e9d03e16c009e8887e6d71e5 SHA-256: 30de90971a4236125f13bc02a39c1055de09320615b1422da17fa1c12e9abd4a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', indicating it was likely generated by a tool rather than being a legitimate document.

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://coretry.ru/pbw?utm_term=pv+and+fv+formula
    • https://cdn-cms.f-static.net/uploads/4417216/normal_5fd1f20066e34.pdf
    • https://cdn-cms.f-static.net/uploads/4487632/normal_601bc1724862b.pdf
    • https://cdn-cms.f-static.net/uploads/4472501/normal_60303ce218443.pdf
    • https://cdn-cms.f-static.net/uploads/4418781/normal_60250ae0162cd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/63eb0b60-4a27-4078-b11c-d2c112acbfdd/18590292330.pdf
    • http://jutifakukap.pbworks.com/f/how_to_pass_medical_assistant_exam.pdf
    • http://kuzimotum.pbworks.com/f/legosunolotodebezabekola.pdf
    • https://uploads.strikinglycdn.com/files/d0eb0b17-ec56-4549-9a6f-44eae23477d3/muwugajejuvosezilujuzux.pdf
    • http://gijorugisaw.pbworks.com/f/91171032973.pdf
    • https://uploads.strikinglycdn.com/files/00b0d688-ccef-4138-9428-548ce818cbc5/livogituboniguf.pdf
    • http://jujirafamena.pbworks.com/f/corey_theory_and_practice_of_counseling_and_psychotherapy.pdf
    • http://nadupodifado.pbworks.com/f/how_to_change_the_belt_on_a_hoover_windtunnel_pro.pdf
    • https://uploads.strikinglycdn.com/files/bf7e026f-8042-4777-b314-70dc42652203/voxetululageloroxen.pdf
    • http://garigor.pbworks.com/f/manual_carburador_solex_34_34.pdf
    • https://uploads.strikinglycdn.com/files/fc70b6e4-28a4-4613-9783-594b9131b488/53819508915.pdf
    • https://uploads.strikinglycdn.com/files/ae116a8c-545c-455a-bb4c-23fffbd79fd1/34839312898.pdf
    • https://uploads.strikinglycdn.com/files/df58e3af-934b-4473-bf76-3411b34416af/fitness_blender_workout_routine.pdf
    • https://uploads.strikinglycdn.com/files/82108a32-0562-4926-a66b-87b54d8a2cab/what_kind_of_batteries_does_a_baby_swing_take.pdf
    • http://kukepofarit.pbworks.com/w/file/fetch/144446472/the_cuckoos_calling_cormoran_strike_series_book_1.pdf
    • http://nilanom.pbworks.com/w/file/fetch/144416151/troubleshooting_scansnap_s1300i.pdf
    • https://uploads.strikinglycdn.com/files/833528c6-76f8-45d0-bd4b-199849cd96d4/60118890922.pdf
    • http://wepadigisita.pbworks.com/f/where_to_put_cheat_db_on_ppsspp_android.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_off00011e32.bin
fc485eb4f7a79cf2bc32e36028365e9385864931971ddb301fb85ba23197d6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E32 4936 bytes
font_01_sfnt_off00012ef3.bin
8b8e7ea43f5e30e57793d2164d98ab46341c76c9966cc9b372d9371b6bc479ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF3 12068 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.