Malicious PDF — malware analysis report

Static analysis result for SHA-256 3084f2daa0249442…

MALICIOUS

PDF

70.8 KB Created: 2020-12-28 00:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8bf9af4700b96470d6f3e94102896e4d SHA-1: b8c659c087f7c04d1d7ff9c3c31b281b86387b7d SHA-256: 3084f2daa02494422158df669e1b7d7e966a2151649bec7d9477e2c17aab88d5
154 Risk Score

Malware Insights

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

The file is a PDF containing a link to a known malicious redirector, traffking.ru. The ML classifier and ClamAV also flagged this file as malicious, indicating a high likelihood of phishing or malware delivery. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=anansi+the+spider+a+tale+from+the+ashanti+by+gerald+mcdermott In PDF document text
    • https://cdn-cms.f-static.net/uploads/4463791/normal_5faddcaae0e95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406466/normal_5fcd3ed521ec1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498983/normal_5fcd1fa919e55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446923/normal_5fd2609e31d74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5fa317d08bba0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482413/normal_5fc1a2c282e9e.pdfIn PDF document text
    • https://cdn.sqhk.co/riwutosax/igekkjf/mangalore_city_corporation_ward_names.pdfIn PDF document text
    • https://cdn.sqhk.co/bipukawu/bhh0jcZ/41238535387.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446398/normal_5fb8298c57c11.pdfIn PDF document text
    • https://cdn.sqhk.co/gisanewat/fF33Jjd/xabozi.pdfIn PDF document text
    • https://cdn.sqhk.co/junuxuseg/Jjjnhj9/20956607410.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/wilugugo/business_strategy_books.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/dasaju.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_off0000d4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A2 5800 bytes
SHA-256: 90c2e290bf2f05c020ab8b7d2624c0cb837637d9c37784dc38625e1871ea9eeb
font_01_sfnt_off0000e845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE845 11032 bytes
SHA-256: 34d1d2a593637fc6248e449bbbc8b37f95d5411e3121001d69963fa0b488a6f3