Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa916fc75dcff6b…

MALICIOUS

PDF

69.3 KB Created: 2020-11-26 12:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4a400e7033fc057bc3195391a1ac6c09 SHA-1: 04e5a9e501e3a9081c04970939bdeda937fe34e6 SHA-256: 0fa916fc75dcff6b81595daebaca38b64305a75486ffefa093a8d78972b44230
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely as part of a phishing campaign.

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/strik?utm_term=attic+ladder+installation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501975/normal_5fb26200b1e6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465702/normal_5fb750b2b29a3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/nivurenetusosalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/481f9fd7-a6ae-4c5f-8fa7-5fda86ed145b/nowezefamakosuvu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0374d23-144b-4c8d-a608-ce8fbcc90bc0/terraria_new_worlds_download.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/nemefasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5ee20c-c52d-4f61-9a37-c1597c784bcc/35514392885.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/solar_system_scope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23796eea-ae16-42b0-84a2-f4bc9f320454/planet_coaster_custom_signs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e092de5-2636-4e11-9ff1-c9fbfb06ed05/2823375655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/995256d8-766d-4b38-87d9-1e82434cc99f/tiwimagowigixebavise.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/i_write_the_songs_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c469a2-aa38-4aa6-93fc-91b8f0f79ab1/vukumadapidukerixit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457059f7-18e5-4606-a52b-dfdfea7c4db5/the_chronicles_of_narnia_complete.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_off0000d4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F2 4924 bytes
SHA-256: cdad722fc323e16c77675985889cd5339736e23de8e310367c3ef38c38772241
font_01_sfnt_off0000e5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 10264 bytes
SHA-256: ac7848be0fc18a555b8f356a43c6d25ac4cf7dd1bfbdab65f349c30d9cc6c819

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