Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ebe4c4bbd422949…

MALICIOUS

PDF

84.1 KB Created: 2020-12-22 17:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9f6d616bd2a08de55dca1f4ed6e7be16 SHA-1: 02fd5839988b2bec409b8795515c02af50934602 SHA-256: 6ebe4c4bbd4229496cc350cc524a83b3f4a7e3d956efd7c9c624d4fa700c8e71
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. This URL is presented in a context that appears to be a lure for online games. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL indicates an attempt to redirect the user to a potentially harmful site, likely for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/strik?utm_term=cyber+fire+free+battle+royale+shooting+games+online In PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_5fb81cfc27d5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444877/normal_5fc5fa69c8acd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458132/normal_5fa50256dbd96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405945/normal_5fad244bccc78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc4d10ee2fce462bca5020a/t/5fc50a7ceaf37e3b643b95d0/1606748796912/up_the_irons_origin.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/jusozederirapipe.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/gebagifezivozipasik.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/33320441148.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/pusoleweworoja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50bae7d0c8f249d5b975a/t/5fc58424f8cdb769c69fc529/1606779941244/67216894208.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/bsf_bharti_online_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/manual_for_dish_hopper_3.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/lovely_nirman_all_sad_song.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7bc0302915d4a16fa7057/t/5fcb07c2190ee82df8d5ccbe/1607141316932/rosol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a41824b06a7eb327987d/t/5fd65891ab777271768d7891/1607882897801/73185901660.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_off0000fe9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9E 5236 bytes
SHA-256: bbd74f7edf49ba3d4243179f78c0224ef397697e054a25cc749a15ae908daddd
font_01_sfnt_off0001103f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1103F 10624 bytes
SHA-256: 3d8a4ead1f1c3bfe553238630ce082fc5258cd4c735c0cf1e7a56da5a815551a
font_02_sfnt_off0001349a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1349A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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