Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc09ea1f7fe9891…

MALICIOUS

PDF

72.4 KB Created: 2021-03-31 07:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af1f393d5afb52f19c88cea2a22a79d0 SHA-1: f407e3b4f780ce4f4319a88457666ed5fbe6629f SHA-256: bbc09ea1f7fe9891d529e28d470f773d508ddbb54cd9f9647af472c8300acdc7
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a critical heuristic firing for ClamAV detection. An external URI pointing to 'pelibifir.ru' was extracted, suggesting a potential command and control or phishing link. Although no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to deceive users, likely as a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://pelibifir.ru/wix?keyword=yamaha+rx-v383+manual
    • http://lazategomid.scienceontheweb.net/accounting_for_management_notes_for_mba_anna_university.pdf
    • http://jetinaxisodew.mypressonline.com/pusexudaniso.pdf
    • https://cdn.sqhk.co/zojixemem/cbgdggS/werarepuzegalegop.pdf
    • https://cdn.sqhk.co/wujugojuse/S7Tgcgf/water_slide_extreme_jumper_sam_s_club.pdf
    • https://cdn.sqhk.co/vozeseseber/hzib4ib/applock_fingerprint_pro_apk_2019.pdf
    • http://vizujoguva.iblogger.org/technicolor_modem_tc8717t_battery.pdf
    • https://cdn.sqhk.co/wavefekus/ha1ifzG/51651637885.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zoforex.rf.gd/ridafudu.pdf
    • https://uploads.strikinglycdn.com/files/2482b73b-993d-4815-b4cd-4c5ce21e2eef/hip_hop_drum_beats.pdf
    • http://segudufarus.epizy.com/cutting_edge_advanced_answer_key.pdf
    • https://2489a575-72f7-492f-b117-28cfe4a4d2a3.filesusr.com/ugd/d81705_16c37739dae94c3f9e6280ea971dd7c8.pdf?index=true
    • https://ffcd7f67-9b43-45c2-8e44-b15cca9583b8.filesusr.com/ugd/48bf55_20c56e99625b4ac6a5c6f40d19b4d01d.pdf?index=true
    • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_df7d835547d549838d3e9769fa508885.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c626cf6b-4fcd-40ef-b36f-ac00bec3bd87/presto_dehydro_digital_electric_food_dehydrator_instructions.pdf
    • https://uploads.strikinglycdn.com/files/e846fb93-e8d4-4e3e-ac21-3591b79cbc8a/62316404049.pdf
    • https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_f7402174a9c64a328dfd14803bd2e843.pdf?index=true
    • https://dedb376b-efc3-4528-ac10-fc65d12f866c.filesusr.com/ugd/5f6074_a2551b9a2d374aa2824148fddfb76d4a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/20687d8d-057c-42ec-bbe1-bf2471a48d04/what_is_a_dialectical_approach.pdf
    • http://vasinazovuxe.rf.gd/convection_currents_plate_tectonics_worksheet.pdf
    • http://sagalesokalu.epizy.com/all_perfect_tenses_exercises.pdf
    • http://kopupukev.rf.gd/41681934129.pdf
    • http://jetelusaxidu.epizy.com/microsoft_configuration_analyzer_tool.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1c6.bin
c1caee1a85de3b4b6cd005d4bdafab3db8cedf074651084319cf8592645ecc61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C6 4752 bytes
font_01_sfnt_off0000e1b3.bin
b2452b083eb34bfd7a4eee5fec6d227c91ecd715030c53e371a09e61d4694c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B3 10720 bytes
font_02_sfnt_off0001063a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1063A 4324 bytes

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