Malicious PDF — malware analysis report

Static analysis result for SHA-256 2869974c2560c4df…

MALICIOUS

PDF

90.3 KB Created: 2021-03-23 21:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd2b9b0180a33c7fd7c8d84fe88787e6 SHA-1: a9f548cb01b838691663754a0b3a06fe50614519 SHA-256: 2869974c2560c4df7ff35198511bc5e7f2bb3adf65ea199b76e85bf45c1cceb3
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. The embedded URL and document body suggest a lure to trick users into downloading a PDF, likely containing further malicious content or leading to a phishing site. No scripts were extracted, but the presence of external URIs indicates a potential for downloading additional payloads or redirecting to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dugedepap.ru/award?keyword=computer+full+form+all+pdf
    • http://shoop-fe.ru/lenovo_t510_drivers_biosrajkd.pdf
    • https://cdn.sqhk.co/kawonidoza/jgmicil/widanukaf.pdf
    • http://fovikoxesaweziz.medianewsonline.com/computer_architecture_and_organization_by_john_p_hayes_tata_mcgraw_hill_1996.pdf
    • https://cdn.sqhk.co/radageroboko/FEjjgcG/the_blue_room_movie_watch.pdf
    • http://x-bionic.shop/niv_study_bible_large_print_leather_boundvulu4.pdf
    • http://betogav.22web.org/42812535141.pdf
    • http://gogejevi.iblogger.org/what_does_the_bible_say_about_feeling_empty.pdf
    • http://lofoporubatul.mygamesonline.org/zukoriwagupawijowiteru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://seroritubofa.atwebpages.com/nofozef.pdf
    • http://bepolujogox.atwebpages.com/paxowososijodogaxa.pdf
    • https://746420f6-3007-491b-ba72-fd43be5094e5.filesusr.com/ugd/277b62_4c66ae7158294cf6aed1085e8696b59a.pdf?index=true
    • http://dexedigobejo.rf.gd/ascending_aortic_aneurysm_guidelines_2018.pdf
    • https://0ddd2631-58c7-464c-86d0-a5d1d8121c04.filesusr.com/ugd/301b85_29d127b15ff94517b729790aff97ad35.pdf?index=true
    • http://parepakikil.epizy.com/jeleju.pdf
    • http://lifanijuw.epizy.com/hitman_blood_money_resolution_widescreen.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105ee.bin
e1478c730179ecf16baab3053308a41997ac33730a62f41dcaf862f05ba2cc81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105EE 4916 bytes
font_01_sfnt_off00011682.bin
6e5de5c6bcb7fdd8c5ca0d25823a8f80e6c764803c1b732dbc9c425a5c0f8ea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11682 2092 bytes
font_02_sfnt_off00012028.bin
84831d2eafd8520d9fff1b5f47a47f48c21fa50dee1fa11b0ca4217e777baca8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12028 10940 bytes
font_03_sfnt_off000145a0.bin
7704be302a7e0b0c5a0f41754475c52aabadc3ce2f24abdcee63267b7f62969b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145A0 5756 bytes

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