Malicious PDF — malware analysis report

Static analysis result for SHA-256 0513b99ad20becbb…

MALICIOUS

PDF

85.9 KB Created: 2021-06-01 03:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c66b848d5f23893d9037f50df524a4f7 SHA-1: 7e98664a63352424922236cd856414c621346c13 SHA-256: 0513b99ad20becbb980334ef567dbf5d2e6ac8eb49431f95662d6756951e3354
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that directs users to a page related to 'mxq pro android tv box firmware update', suggesting a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://wastran.ru/pbw?utm_term=mxq+pro+android+tv+box+firmware+update
    • https://cdn-cms.f-static.net/uploads/4383160/normal_5fd1c94cd24a1.pdf
    • https://cdn-cms.f-static.net/uploads/4469860/normal_605b7dd2d5e15.pdf
    • https://cdn-cms.f-static.net/uploads/4381547/normal_6024294be2904.pdf
    • https://static.s123-cdn-static.com/uploads/4404490/normal_5ff2349baa379.pdf
    • https://cdn-cms.f-static.net/uploads/4384143/normal_601b444d1c5eb.pdf
    • https://cdn-cms.f-static.net/uploads/4402519/normal_602117116b1d1.pdf
    • https://cdn-cms.f-static.net/uploads/4415930/normal_604146de2b4e0.pdf
    • https://static.s123-cdn-static.com/uploads/4423155/normal_5ffe473ad0ef7.pdf
    • https://cdn-cms.f-static.net/uploads/4392877/normal_601ac4aa875b9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bupataved.pbworks.com/f/43358865799.pdf
    • https://uploads.strikinglycdn.com/files/ba232519-a3d1-452a-9ca9-e41e42f00e0c/can_we_sleep_while_wearing_contact_lenses.pdf
    • https://uploads.strikinglycdn.com/files/7bc7303e-4d09-412d-8820-1135235d7a34/the_ministers_black_veil_literary_analysis_essay.pdf
    • http://rugewenuzed.pbworks.com/f/pelolufofoxivaxuvoseten.pdf
    • https://uploads.strikinglycdn.com/files/82d9f3ac-4cf9-4f5c-a769-682507756c85/88038002263.pdf
    • http://wuwazilizos.pbworks.com/w/file/fetch/144425397/presidents_choice_5_cup_coffee_maker_manual.pdf
    • http://wuvebag.pbworks.com/w/file/fetch/144428589/how_to_bypass_beko_washing_machine_door_lock.pdf
    • http://kedetuwi.pbworks.com/f/barry_windsor_smith_conan.pdf
    • http://nowefuro.pbworks.com/f/materi_manasik_umrah.pdf
    • http://kedetuwi.pbworks.com/w/file/fetch/144428070/8676377527.pdf
    • http://zajozote.pbworks.com/w/file/fetch/144437205/rubapazozobomiposaru.pdf
    • https://uploads.strikinglycdn.com/files/025b0556-d913-4d34-a934-99ed3f46f054/92642290746.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_off000109d4.bin
d82db9509c3f9497178aaf5d077583c943f3a8be3b205c610e411a3041f2a079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109D4 5468 bytes
font_01_sfnt_off00011c72.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C72 1800 bytes
font_02_sfnt_off00012500.bin
a4e7c2811ffe0de4742bfa8a944e00cce1db0996c8e283480ff379ce98bd0189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12500 10684 bytes

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