Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9be64afe91b5b29…

MALICIOUS

PDF

68.2 KB Created: 2020-11-22 07:13:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 55cb9a68268e8e0f6a60ae02b7007d28 SHA-1: d07213148f61831d561a5cc0d2e220f99e9c9990 SHA-256: e9be64afe91b5b29fc328b50dcf6ec0dd8b9b1e99b66266a65397afc57d0b90a
154 Risk Score

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 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. The embedded URL is likely intended to lure the user to a phishing site or download a secondary payload. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

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=american+swim+coaches+association+levels In PDF document text
    • https://zibefaxad.weebly.com/uploads/1/3/4/5/134594794/e878d.pdfIn PDF document text
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/7639861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f99a709464de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384028/normal_5fb2900ca4605.pdfIn PDF document text
    • https://bumenabizobopum.weebly.com/uploads/1/3/4/4/134462968/9759927.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/litadebafemo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f887cf0acefe.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/57ba094a-5df9-4f24-afe7-0a2cdeb41f34/66420857420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f249ff52-3c42-48bc-8743-a7610c2494b2/nuranunagobijixudos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24554cf2-0056-4987-bf55-154e7c32ecd9/cobra_cx210_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f71fbefb-3bdd-47d5-991d-7c9437fddd5e/fugamalix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e186085-c05c-47e4-9d41-828775030644/dapunuroba.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_off0000c945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC945 5180 bytes
SHA-256: e24d31f041f889c7578cc50f9d104157c4ae113ef7a286c5e2f156619381f633
font_01_sfnt_off0000dac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC8 11852 bytes
SHA-256: 0ba2adf4a3b4d9de16698e7c46acd091eeb51ccee2256b7da755380aeda2c076

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