Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c303150f2eb17a…

MALICIOUS

PDF

70.0 KB Created: 2020-11-25 06:52:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86db3a6efbdda69ee64e2f00a64a690b SHA-1: 7ecf4fe78b7d8417100b412e2929f1c4f1d31fa6 SHA-256: 15c303150f2eb17a2f9ca478d7218c5469cfd09673cc00ed8e1a24361d457e15
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely part of a phishing or redirection scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/aws?utm_term=crawl+review+parents+guide
    • https://nujusokomofevak.weebly.com/uploads/1/3/4/5/134503883/6552557.pdf
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/wodudonenuniwu-giragi-porobavono.pdf
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5faedfbde753b.pdf
    • https://mesaxejako.weebly.com/uploads/1/3/4/0/134097573/vudofuvutef.pdf
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/5293624.pdf
    • https://taruzabob.weebly.com/uploads/1/3/4/4/134493447/jevol-zudulasarux.pdf
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5f972c0f87aa6.pdf
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f947d20419d8.pdf
    • https://cdn-cms.f-static.net/uploads/4391898/normal_5fa95a5d8f9c2.pdf
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f8b374856e2e.pdf
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5f8af6aa3f531.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/bdb78bc0-274c-4781-b669-58794deb405d/archery_world_tour_online_game.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_off0000c93d.bin
e8c0cdeacc76002e6cd649a1a014f7f39a8683d95098b4f1efbb838ee3082330		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC93D 5072 bytes
font_01_sfnt_off0000da9d.bin
0fa52cc1451f22f3735fbd0b2f3d31af92f6a1875bed6ed0b86ff890f0fdfcd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9D 10236 bytes
font_02_sfnt_off0000fdad.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDAD 4324 bytes

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