Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ba371ebdbc46d3…

MALICIOUS

PDF

70.3 KB Created: 2021-04-08 05:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a429ee4d17de5ec18719192c71a64edb SHA-1: dc7dcbcc55edcf2bc02912c0c25e01147193ecb7 SHA-256: d0ba371ebdbc46d346697127c956e968e23c38a1d5031b0e3893263ed5d94fe7
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/123?utm_term=womens+checkered+vans+platform
    • https://cdn-cms.f-static.net/uploads/4383450/normal_6056bc02c83fb.pdf
    • http://kugiriteno.iblogger.org/3rd_grade_math_addition_word_problems.pdf
    • http://tujasumetozuku.22web.org/pegasus_single_handle_kitchen_faucet_cartridge.pdf
    • https://cdn-cms.f-static.net/uploads/4475734/normal_60419a0b97c91.pdf
    • https://nazokorebuvawir.weebly.com/uploads/1/3/0/7/130776058/gupafo.pdf
    • https://static.s123-cdn-static.com/uploads/4454043/normal_5fe4d86f7aa59.pdf
    • https://cdn-cms.f-static.net/uploads/4370286/normal_60331229c68b9.pdf
    • https://static.s123-cdn-static.com/uploads/4407813/normal_5ffec21404d53.pdf
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ff2807a51e03.pdf
    • https://wevopuvigamez.weebly.com/uploads/1/3/4/3/134320632/gefetaxalaxom_suvojaximuge_zolej.pdf
    • https://cdn-cms.f-static.net/uploads/4413007/normal_60291b7b55555.pdf
    • https://xigakoter.weebly.com/uploads/1/3/1/3/131379919/tomel-domovawado.pdf
    • https://fudesatalaponu.weebly.com/uploads/1/3/2/7/132710537/029da.pdf
    • https://cdn.sqhk.co/bulixanejad/haWjhNf/95769721375.pdf
    • https://cdn.sqhk.co/gobajejuz/jaWhfhj/suziku.pdf
    • https://cdn.sqhk.co/boxepupovemu/icjdgch/44152442685.pdf
    • https://cdn-cms.f-static.net/uploads/4471475/normal_602f9f62f3267.pdf
    • https://pumegamafe.weebly.com/uploads/1/3/4/4/134498449/5572185.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/94eb8b63-1a78-45a2-a835-854f52421571/what_is_the_new_shuffle_dance_called.pdf
    • https://uploads.strikinglycdn.com/files/aac49bea-91e0-4ead-861f-616ce06699f5/vaperuvebomibujamera.pdf
    • https://uploads.strikinglycdn.com/files/bfd16ec4-7b6f-4113-aa48-722d084247f8/progress_in_mathematics_grade_3.pdf
    • https://uploads.strikinglycdn.com/files/8c861872-53da-4b89-b96e-b6e4dd2a7703/rujagot.pdf
    • https://uploads.strikinglycdn.com/files/7d965549-07c2-48a1-a86b-179a60b88214/pefamuvijixeza.pdf
    • http://xeliposemufara.rf.gd/brouwer_fixed_point_theorem.pdf
    • http://zomatur.epizy.com/xofidibemosafozedotenon.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_off0000d6f1.bin
c161465bf0eae03506d371241ee11f571fd1624390e778a22503d6aa95a7d7df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F1 5532 bytes
font_01_sfnt_off0000e9aa.bin
e69e16350ff2da3be89918c2e442ec10eed35c28922eff61f3922551cc8b5f55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AA 10016 bytes

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