Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb0132882a8e491…

MALICIOUS

PDF

76.9 KB Created: 2021-04-04 09:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdb2d5d0f04b463ed58328106f59b654 SHA-1: a9f1bc805a3a117943fe3638c4d1dd6bd3530825 SHA-256: 6fb0132882a8e491d59ecc5f2fc340259bb19bb4e460286712c735807ceb68bd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be related to a product manual, suggesting a lure for phishing or malware delivery. The presence of external URIs and the ML classifier's high confidence score indicate malicious intent.

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://kuzutuzo.ru/strik?utm_term=ipega+pg-9023+bluetooth+controller
    • http://kyrgyztours.com/76751372069agtad.pdf
    • http://gosugas.getenjoyment.net/kuxedifikub.pdf
    • https://cdn-cms.f-static.net/uploads/4371790/normal_601f0cdd0bde4.pdf
    • http://rewita.fun/sewatujajekutimenopatozis1a1ms.pdf
    • https://static.s123-cdn-static.com/uploads/4410214/normal_5fcf32fb7f3bb.pdf
    • http://kvrovk.xyz/79057129436qx59w.pdf
    • http://zokugorevat.mywebcommunity.org/ncert_maths_class_11_solution.pdf
    • http://tazizinujumijoj.mywebcommunity.org/automorphism_group_of_a_graph.pdf
    • http://lizowaw.scienceontheweb.net/xobol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dowesitobuga/capital_gains_tax_computation_sheet.pdf
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_14e2334520924dada0450f997ae33d7b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d16e604d-4916-4ba6-aeff-01777769a103/plantronics_voyager_legend_charging_case_instructions.pdf
    • https://uploads.strikinglycdn.com/files/a9edccc7-dc8f-4f51-82c7-49fe23b80e59/craftsman_table_saw_motor_replacement.pdf
    • http://miganuvag.myartsonline.com/kujodazutotesokotavupubi.pdf
    • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_5e8cb1ea966840ea86d1daadd1005ed5.pdf?index=true
    • https://s3.amazonaws.com/kegubinefuda/oxygen_not_included_cheat_sheet.pdf
    • https://2e4d99de-9d37-4ce2-abd5-0bbccafdbe51.filesusr.com/ugd/33a2e4_65e00bd3e9b94b8d89a28abe8dc988b4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bc2e0af8-ce23-467f-aeb0-6b134b912008/logitech_x-530_software_download.pdf
    • https://caf0f927-206f-4b4e-aa34-0dd3da53679b.filesusr.com/ugd/83d902_857fcfe3fb88414d85b0669672d0dce9.pdf?index=true
    • 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_off0000df31.bin
ab0b24b88aaf18961c83dd10c87f7fea5a0d3a5fb8d01f9975cc19398f67e491
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF31 5720 bytes
font_01_sfnt_off0000f2ab.bin
7453ccc9e133c04ecb3966295bf62e6fa4e059749f9101ba678ea03b363ad516
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AB 22288 bytes