Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e86f80cff3b389…

MALICIOUS

PDF

79.4 KB Created: 2020-11-18 03:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 17a1eec4a8638de17fd16faf0d2a5ffc SHA-1: ef469332ae45d31bf8b82bcb290e045a0358e0cb SHA-256: 68e86f80cff3b389d39c27b9042c03eb01cacebc84a3c708199470df722e1b32
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=diary+of+a+madman+lu+xun+themes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372376/normal_5f893df7ee639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_5fad5afb9965e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5f8898dfd4eee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/18d2a966-0599-4130-a61b-4d228e125181/loletenil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e6bf769-2202-4070-9fa0-614f76c9039b/56933114279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad6740e-9642-49a3-b522-4cc141bb3f36/atlanta_legacy_softball_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d65c20ef-8d42-4e40-9a29-7564474cc3d8/70635268777.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/94939443136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4550d4e0-9f91-4a0f-a23f-5c3b23f9b7d3/z-line_designs_jaguar_tv_stand_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/208d21ae-ddd5-4aef-8f94-b2895fafb132/93528813759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b192b2a7-0d6b-4a25-b920-f9fc241d7e46/biwolepof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29ceb7d-f348-4c4c-ac48-ee2f517be102/vivogeweluxowolasijekuxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c077232-eb27-4313-ac22-732a1985c20b/geometry_for_enjoyment_and_challenge_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148dcd4f-163c-4357-adbc-015d54cadb16/86956323198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6b315b-77a5-4f0a-9880-cb2f3efe1c3a/what_is_a_synonym_and_antonym.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE802 3772 bytes
SHA-256: afc8c5cdf55726c90bd18b80da3107babe226d683b3f00c3996d66c009f8d107
font_01_sfnt_off0000f572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF572 5316 bytes
SHA-256: ce6d225c380bfc8492e07ff517e7e349904c04a3dabf57adc8c8893262793841
font_02_sfnt_off0001076f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076F 12676 bytes
SHA-256: a7b6f10209d9541c16b33b94a59e290b7618e69fbbf2ba1289e8f8724a1be109

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