Malicious PDF — malware analysis report

Static analysis result for SHA-256 606f3f8bf176c277…

MALICIOUS

PDF

61.1 KB Created: 2021-01-02 04:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: df939c8f18db0ad6c4dc4cb61b64d97a SHA-1: b8e994acf5d98e28c905a206b7695395fa5a71d8 SHA-256: 606f3f8bf176c27709cf6a18645b0ce2efa2230059d15f12b16caa2935aea2bf
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL 'https://traffking.ru/123?utm_term=you+are+beatiful+beyond+description' is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious link strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=you+are+beatiful+beyond+description In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490725/normal_5fc5b44ea793d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fdfc748ef323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_5fd6983c5ffb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5f8ac83d4ff8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417809/normal_5fe600a422498.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/tajimipojimo/69326896096.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/pojuwiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b58d0dbe-73a4-4a3b-80ae-f88e2bd4e4aa/cyclops_hull_fragments_coordinates.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/badmashi_kro_kro_hd_video_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/921a720d-66fe-4ebd-b3e8-481045e40a21/phoenix_airport_map.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_off0000b270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB270 5352 bytes
SHA-256: 995c23adaf87e05cacedaeee815b17412204d0405e80afb35e73728cc1cb6423
font_01_sfnt_off0000c4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B6 10420 bytes
SHA-256: 2ba1297d3b46e83c834b0074ce40c9007e67e025e84eb97c36c5b9500c620d1f

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