Malicious PDF — malware analysis report

Static analysis result for SHA-256 7629705823063687…

MALICIOUS

PDF

67.8 KB Created: 2020-12-26 19:17:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ffd95eb0febbccfbddb90c1167171a55 SHA-1: 59857d206d92f1044aab1e9b3fd9f8f0de6f90ce SHA-256: 76297058230636879679f8a130c32d08e3b14bc6ec4fcadc266f2e4e303b5828
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 'traffine.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this document is designed to redirect users to malicious infrastructure, likely for phishing or to download further malware.

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://traffine.ru/aws?utm_term=lion+king+imdb+parents+guide In PDF document text
    • https://vawevoza.weebly.com/uploads/1/3/1/4/131482963/4760423.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417814/normal_5f98f30c8019e.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/fjfgegi/anwar_movie_songs_free_download_malayalam.pdfIn PDF document text
    • https://sunajekivogemaz.weebly.com/uploads/1/3/4/8/134895881/382668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443362/normal_5fad7950ef654.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422145/normal_5fcbe77e8b81e.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/ORibhjW/44734401776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475564/normal_5faad7b83bd10.pdfIn PDF document text
    • https://fofupapezu.weebly.com/uploads/1/3/4/3/134356394/ba1f5e06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407066/normal_5fc744cd4a2b8.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/nelizenejakarug/acc_aha_guidelines_non_cardiac_surgery.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_off0000c993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC993 5392 bytes
SHA-256: aecacd59d3bfdeaa6979cdf0c6bc4270a64cc8daa693a9e532a37cbca3bc92c4
font_01_sfnt_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 11484 bytes
SHA-256: 54bcf4f4790caebedd7c75939a7ea4bae200f854856a6593882595215dac27cc