Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f058ce3e441dd38…

MALICIOUS

PDF

69.0 KB Created: 2020-12-16 09:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5b9f177f14a3727261502dfc756eda06 SHA-1: e43f01c45f8d01de404176fe724f74d2f8282210 SHA-256: 0f058ce3e441dd38c6e5bc093cd93f8d023380bba2fd5d774efced74594ea7c6
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a potentially harmful external resource.

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://trafftec.ru/123?utm_term=lorus+mickey+mouse+watch+band PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423699/normal_5fcdb8f35a3fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443342/normal_5fc2dbdb3f987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_5f8d7bff92fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409997/normal_5fa8af5fa3906.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc67c172e34347c706ae803/t/5fc8c0ec13f8d93bf20c6522/1606992109567/88958429668.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfb473ca23154c95b6078/1606220620902/body_glove_water_filter_bg-1000.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/10592350663.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc198bcc6d9645836271125/t/5fc375b79d79364840fa0f47/1606645179835/transunion_we_are_unable_to_complete_your_request.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/facebook_app_for_android_latest_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bc6ebf71053ccb1bf174/t/5fccc4b10ab5d62febefbee4/1607255218339/hello_discover_share_and_communicate_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/jizigavutiperesabade.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/empire_building_games_android_reddit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc541af24b06a7eb31c2be5/t/5fd68abf72b1137fa97c7df7/1607895745357/47965597408.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd2c30b6b03258f2f7c3b/t/5fce5c4224c49707d351aaa9/1607359555620/channels_whole_home_dvr.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3715e3dfdd95b60e53d86/t/5fc647eb5147b14804086884/1606830060487/29889629812.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5D 5484 bytes
SHA-256: 1a7fe7eb7ada2154760a6fbdef7e0e10c1ac79392747c61901c3c1d29bc363a7
font_01_sfnt_off0000e0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F4 11496 bytes
SHA-256: 470f245af2d6eb0bd40ec1542e7142e9a5f06763682df76308f03fe01691d674

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