Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2aafa9f18f02738…

MALICIOUS

PDF

65.8 KB Created: 2020-12-03 03:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d15a6c64c40d553bb51a853a7084532c SHA-1: 16edd8628d60762dbdb71a61c40137208e8057eb SHA-256: c2aafa9f18f027385c4dc21741415e340b1ca7b2ea6c923ad03e22e961b690bb
222 Risk Score

Malware Insights

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

This PDF document contains multiple links to external resources, including a known malicious redirector. The primary link, 'https://traffking.ru/strik?utm_term=backyard+football+2002+download+mac', suggests a lure for software downloads. The presence of numerous PDF links and a critical heuristic firing for malicious redirector infrastructure indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=backyard+football+2002+download+mac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f8708ad5ac00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5fabf814b142c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fa078b960efb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414498/normal_5fb76f4a08fef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_5f937a2ad985b.pdfIn PDF document text
    • https://bemazinava.weebly.com/uploads/1/3/4/8/134890863/6f917e85c8717.pdfIn PDF document text
    • https://vaxulazazoju.weebly.com/uploads/1/3/4/5/134587837/gekaso.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/2065696.pdfIn PDF document text
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/587597e0c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f87a5278b9aa.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/duvijodetan.pdfIn PDF document text
    • https://vexivager.weebly.com/uploads/1/3/4/6/134634122/765f6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32B 5708 bytes
SHA-256: 8e5bb607ae61845dd238ea806e7b4009511ef171936bb33b1bcab9f10846548b
font_01_sfnt_off0000d6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AA 10476 bytes
SHA-256: 2c5066a8fc386ab1551c3ae4b1aa6381d6d35cc2cccf115a18c0a3915c6ec5ad

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