Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf1fcb7139d42c6…

MALICIOUS

PDF

67.7 KB Created: 2020-12-30 19:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e21ac266f0d3110209f0693f33fdc1d0 SHA-1: 7537b143138714576f774282fff909541087ab30 SHA-256: dcf1fcb7139d42c6a76cdd59e5d100f6bd4c357aaf9ff28996e45f66fe6e8961
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/123?utm_term=how+to+disable+avast+avlaunch+component, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=how+to+disable+avast+avlaunch+component In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475730/normal_5faae34dd9fdd.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/8886687.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5fc9b6d454c68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_5fd670253a37e.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/8eb186106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460706/normal_5fd11721ab2bd.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/60db24e8-4170-431a-ad06-e3625e9a7af8/trapster_vs_waze_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7d4c5f5-2d46-43c6-9272-f4f21dea26a5/26551070671.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d62369-679d-4d6e-8bdb-5591fa6e474c/97827134161.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_off0000ca56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA56 5468 bytes
SHA-256: a0f214590ff2cac06b84e9815b5a1602570fa70b8f25346e4f0d79c0298cecd7
font_01_sfnt_off0000dcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 11052 bytes
SHA-256: 1899e63727c094dddd4ce4746bd15e691fa6095131d81c96cc6731caa54250fa

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