Malicious PDF — malware analysis report

Static analysis result for SHA-256 807ea2e9ce1a56fa…

MALICIOUS

PDF

75.7 KB Created: 2021-05-26 18:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 996c2809ccb092d7ea76e647c131e547 SHA-1: 5689e373dd72e5f6620d06ec8ed039cb02ed3982 SHA-256: 807ea2e9ce1a56fa711d934db885b0fc20877d14bcd03c762bc9beb3292259da
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. The document body, though heavily obfuscated, suggests a lure related to passport applications, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/strik?utm_term=how+to+apply+for+an+english+passport+in+australia
    • https://static.s123-cdn-static.com/uploads/4383928/normal_5ff3bd711a18d.pdf
    • https://cdn-cms.f-static.net/uploads/4384822/normal_606da0937177b.pdf
    • https://cdn-cms.f-static.net/uploads/4473892/normal_60444214effd7.pdf
    • https://cdn-cms.f-static.net/uploads/4371005/normal_604ba37edfadb.pdf
    • https://static.s123-cdn-static.com/uploads/4426676/normal_6005505278638.pdf
    • https://cdn-cms.f-static.net/uploads/4374682/normal_6048efe4d33a0.pdf
    • https://cdn-cms.f-static.net/uploads/4445544/normal_605d201b1e01c.pdf
    • https://cdn-cms.f-static.net/uploads/4409628/normal_60590804c9a06.pdf
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5fd68a3d88e78.pdf
    • https://cdn-cms.f-static.net/uploads/4376088/normal_60447268f1bf3.pdf
    • https://cdn-cms.f-static.net/uploads/4418991/normal_601dc820aadf3.pdf
    • https://static.s123-cdn-static.com/uploads/4468812/normal_60073bb0d2afa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/588e0f61-f565-4f2b-9e1e-a9a053f1e619/jugirenel.pdf
    • https://uploads.strikinglycdn.com/files/6e198712-391b-4b6f-bc3a-c187b357e690/the_college_pandas_act_math_advanced_guide_and_workbook.pdf
    • https://uploads.strikinglycdn.com/files/69179e79-f389-473e-9069-a56f92cca88e/pigapunazuxota.pdf
    • https://uploads.strikinglycdn.com/files/19ebce4e-a397-48c1-b918-b97b2407cb3d/which_of_the_following_is_an_example_of_selective_exposure.pdf
    • https://uploads.strikinglycdn.com/files/d610862a-5a40-48a6-84fa-6051139dd7d5/introductory_statistical_mechanics_bowley_solutions.pdf
    • https://uploads.strikinglycdn.com/files/c46e6d2e-de4e-41a1-9929-e945c655338a/max_all_social_links_persona_4_golden.pdf
    • https://uploads.strikinglycdn.com/files/ed390ed0-d5b1-4b4b-bebb-29ab4ef3241a/pafupafusa.pdf
    • https://uploads.strikinglycdn.com/files/e35a79a8-e938-44b6-b103-6fc09a4f4d4b/diamond_platnumz_waah_mp3_download_audio.pdf
    • https://uploads.strikinglycdn.com/files/ace3eb07-5e8c-43e6-8f1f-5a8756ec1d06/retokanifasifetogalikakeg.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_off0000eae1.bin
5c4ce92f11ca3a95c76e500ea450a8273b29730453c9e2416517f0e34ca73e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE1 5320 bytes
font_01_sfnt_off0000fd0c.bin
0fa7cdf9170d49b3dd63393b2f773ccf5aa5f21d9fc7736f3b8a05ea683ab2d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0C 10584 bytes

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