Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad6d1bb6edf95e1…

MALICIOUS

PDF

63.2 KB Created: 2021-01-10 19:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 13193690f763186e7de4b20d5be2120f SHA-1: eaa87ab974cd64ec1620248488b7eabb2dadbfed SHA-256: fad6d1bb6edf95e1217f0204b5ed3d7d798a3a4a3fb426725a36f15cb87c1a74
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 'traffking.ru'. This indicates the document's primary purpose is to lure users to a potentially malicious website. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector link strongly suggest an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=dawn+of+the+celebs+2+cheats In PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/8c583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5fbeaef56fd17.pdfIn PDF document text
    • https://sojutobifedurex.weebly.com/uploads/1/3/4/5/134588439/4113934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412909/normal_5f99c83612c82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413011/normal_5fa935b21a309.pdfIn PDF document text
    • https://nenarixu.weebly.com/uploads/1/3/4/8/134899789/jadunegazoguxuvinof.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/gNEgcaE/shoujo_city_3d_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5fe3fc31b9b41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366018/normal_5fe4fed4f3d2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450630/normal_5fec92b480b94.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/zunaduxa/532_area_code_turkey.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/detoboza.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_off0000bb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB49 5236 bytes
SHA-256: 55e319160f573c70ffcc8edf1488c4874b43e89276e3bcd6c1aed5cd11203001
font_01_sfnt_off0000cd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3B 10476 bytes
SHA-256: 86ea29b8a4365a82f5f282135920eccb8cb8c788b301745756eb344e429d09d2

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