Malicious PDF — malware analysis report

Static analysis result for SHA-256 26196209ec64e9dd…

MALICIOUS

PDF

73.0 KB Created: 2021-01-16 01:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d154c9b2bc503dcd0900a3807d5e6997 SHA-1: cfa92fc1a0cb681bd4f1081bce6d6147f7e21001 SHA-256: 26196209ec64e9dd40d6a3f3cfa33fc1b5b6c1ff9002fc39b1243fe5a0e57bb3
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely for credential harvesting or further malware delivery.

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/123?utm_term=normal+distribution+worksheet In PDF document text
    • https://cdn.sqhk.co/guzunilepin/gfjQjgn/wisef.pdfIn PDF document text
    • https://site-1168102.mozfiles.com/files/1168102/xelumefapimejuf.pdfIn PDF document text
    • https://cdn.sqhk.co/tubadaluzafu/hfkhaij/8973370574.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415937/normal_5fc3d2a83ba8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475859/normal_5ff1f53550a55.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/0jbhjoZ/numuruz.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/Xhebm80/92151771328.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/c0ighiX/5151272164.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/wewiro/tamilrockers_movies_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/errand_runner_informally.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/western_maine_conference_citizenship_banquet.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/50899266106.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/39329830800.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/bifonotumegexikelufop.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_off0000dea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA8 5332 bytes
SHA-256: 0d0c511062ca1c5640f0846fc478d7faa301d8ad6d40faa64a8e8e49d99e9014
font_01_sfnt_off0000f0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A8 11216 bytes
SHA-256: eea5919e3b49394237e3af91826b00742b46755f31f8a2886181894b1f782692

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