Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5edeabaab76c766…

MALICIOUS

PDF

80.9 KB Created: 2021-03-09 11:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24fa77f8e63edb1c383437e0f31a8151 SHA-1: b0dc6a45d80892279fc635e8d76f0d3642c2c706 SHA-256: f5edeabaab76c766f08529cc9ff6101b989c443164550ddb0180c9bee5187a91
96 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick users into visiting malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/123?utm_term=nhs+shingles+patient+information
    • https://cdn-cms.f-static.net/uploads/4459796/normal_6031cdef42c75.pdf
    • https://static.s123-cdn-static.com/uploads/4474470/normal_5fef8b3629e7a.pdf
    • https://cdn.sqhk.co/lejesapazud/jtjfifu/30680595809.pdf
    • http://sefexetewizu.iblogger.org/the_boy_who_harnessed_the_wind_movie_download.pdf
    • https://cdn.sqhk.co/fekawitaxug/zSjdhhc/cupcake_wars_recipes_chocolate_peanut_butter.pdf
    • https://cdn-cms.f-static.net/uploads/4474736/normal_6027d3e0710e8.pdf
    • https://cdn.sqhk.co/kulamogo/jeAZ0ii/wisukuv.pdf
    • https://cdn.sqhk.co/wepiwojeta/dHgghem/jomiduti.pdf
    • http://nicepics.xyz/41023665962krjh0.pdf
    • https://cdn-cms.f-static.net/uploads/4471249/normal_6018d4c910908.pdf
    • http://znakomstva18x.site/56099842728e38gq.pdf
    • https://cdn.sqhk.co/sivojadirabe/bjj8Bgh/56519119700.pdf
    • http://trackengine.host/3792731229ukatq.pdf
    • https://cdn-cms.f-static.net/uploads/4385424/normal_6029ded69c9c1.pdf
    • https://cdn-cms.f-static.net/uploads/4488806/normal_600c62a245276.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/19a1fb6b-cfc3-4343-afd1-b463423b7b15/muhammad_ali_record_against_george_foreman.pdf
    • http://joluror.rf.gd/zaboniv.pdf
    • http://selofedibaxonal.epizy.com/a_r_rahman_bgm.pdf
    • http://jimabepur.rf.gd/mezukuxukadaxuzema.pdf
    • http://zilidezokap.epizy.com/predicate_nominative_exercises.pdf
    • https://uploads.strikinglycdn.com/files/56b9b820-b860-48fc-a3df-9a1bdafe7695/pidusivamotabipupofe.pdf
    • https://uploads.strikinglycdn.com/files/cc65ec6b-68c4-4c3c-bcd4-b4d9a68b7059/cat_electric_forklift_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/1673c846-3342-44ba-9930-9f52a4df15f5/64682209305.pdf
    • https://uploads.strikinglycdn.com/files/cecb90aa-fda2-403b-908c-176d2e90250e/pigetolazonisupafizap.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_off0000f126.bin
5c344614e92efcbdf66b28ef2bdf82729137d1f464a9b1b0e1cd56db430bec75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF126 5072 bytes
font_01_sfnt_off00010232.bin
31886931bc23e6d2054ce4634f8e544ae8030f8956787d31b5a3d849ca4bb199		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10232 11460 bytes
font_02_sfnt_off0001281b.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1281B 4324 bytes

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