Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f7420d11e35d6d4…

MALICIOUS

PDF

104.2 KB Created: 2021-03-27 12:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 195bd556f75dfd38d83cc5400f676f03 SHA-1: e831c3b38dd4f69a40d93264c739f7434abecb9c SHA-256: 6f7420d11e35d6d4ee5289ce5c3718c1a4e2ac38a87b2014ea29941c637ce71e
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. It contains an embedded URI pointing to 'https://soxebez.ru/award?keyword=bernard+lewis+books+pdf', which is likely used to deliver a malicious payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URI suggest a phishing or malware delivery 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://soxebez.ru/award?keyword=bernard+lewis+books+pdf
    • https://cdn-cms.f-static.net/uploads/4470226/normal_601505625f60d.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://wozovumorawoka.sportsontheweb.net/toxojopefexigewaw.pdf
    • http://tuxesimufimiti.mypressonline.com/hamilton_vocal_selections_free.pdf
    • http://antileqphh.site/witokevajorudurufobiwrme1c.pdf
    • https://cdn-cms.f-static.net/uploads/4476582/normal_5fda785e6b114.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gateme/90580363737.pdf
    • https://s3.amazonaws.com/kifutizijebuj/bauder_single_ply_installation_manual.pdf
    • http://mutifesojare.epizy.com/30686082204.pdf
    • http://zijozuf.epizy.com/auditora_contable.pdf
    • http://balukop.rf.gd/insta_collage_maker_apk.pdf
    • https://uploads.strikinglycdn.com/files/28ef7972-dd53-4781-8dc9-d0d9867939d2/madeline_hardcover_book.pdf
    • https://uploads.strikinglycdn.com/files/43293759-46a0-4aed-8264-50c7517a0af9/19609679553.pdf
    • http://lubelulezafi.rf.gd/89737306315.pdf
    • http://todidetiped.onlinewebshop.net/lebasesutetesowafam.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_off000159be.bin
df2cf7b85129e84b3667bb242128e6cf74a579006fc0b5dd4d9b340328deb755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x159BE 5380 bytes
font_01_sfnt_off00016c27.bin
3c100644f14e8d589c9def3dfe8d8476e4dae5521ca69baec2afb4181f606812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C27 12444 bytes

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