Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9be0c03f3cbbff…

MALICIOUS

PDF

67.1 KB Created: 2020-11-17 17:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f369637b425426d9c42502fcb88f3382 SHA-1: 1e9a95fdea8c682cb405c8e998c0de41c6d6a442 SHA-256: ea9be0c03f3cbbffe611fd44130c1d536ce1dc8ed24c95505dfe4d3b164450d5
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 an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URL point towards a phishing or redirection attack, likely initiated via spearphishing.

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://ggtraff.ru/123?utm_term=piano+notes+for+beginners+with+letters+hindi+songs In PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/5530776.pdfIn PDF document text
    • https://komanibinepo.weebly.com/uploads/1/3/4/5/134588578/bominopasuxinag_duditinagezowo_sipeganolowi_juzatu.pdfIn PDF document text
    • https://tudidufagul.weebly.com/uploads/1/3/4/6/134622529/4650473.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4353cdc-75cb-4372-8287-def88d01b61c/70991453316.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93d18fca-d90c-4688-b1ba-f97fa3edf5e3/fixula.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/witekitadovulaf.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/67835263781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68255bae-a206-4961-a69b-2f77a30bdf8c/xevobakiponap.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/the_upstairs_room.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a5d6077-993e-459f-ba90-5ec0439037d4/tututepexosezapodiraru.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/29716651071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68cd0673-a64b-497a-8305-575152cfd12f/sabudoxele.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_off0000c63f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63F 5404 bytes
SHA-256: 053201831ba0f5bebc0fb12e6eb169d862fef93bb54fb9c53d96f5a5373ba483
font_01_sfnt_off0000d8aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AA 11180 bytes
SHA-256: 4c367a9266f069f49bc1ccd36e2ddb0838cef4e5f7bbc45c717163d2b315ba3d

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