Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c060d046590350…

MALICIOUS

PDF

71.7 KB Created: 2021-01-15 16:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 19a5635eac926bf7fb4000fe9c4bb599 SHA-1: ded91ab6fe1a88fee336d6981d5124c8281140d8 SHA-256: d1c060d04659035046ae3f9c898e5cdcd9c3d1d25021f121da92bf7be5eeeb25
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 'https://cctraff.ru/aws?utm_term=arab+health+2018+show+report'. This URL is likely used to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://cctraff.ru/aws?utm_term=arab+health+2018+show+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f87cb855523a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_5fb951e989578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f9167981d6c3.pdfIn PDF document text
    • https://silatasetexa.weebly.com/uploads/1/3/1/6/131637876/vagisadi_depenexa.pdfIn PDF document text
    • https://site-1185524.mozfiles.com/files/1185524/fishing_online_shop_ireland.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376099/normal_5febea9609f94.pdfIn PDF document text
    • https://site-1172205.mozfiles.com/files/1172205/starfall_calendar_2010.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/tixeligufokup/best_squarespace_template_for_design_portfolio.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/goresafipu.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_off0000daf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF7 5648 bytes
SHA-256: 29dcfbd110b364b66fa502a645030ac64ee003eaa1962fb61e896b4f3d06442a
font_01_sfnt_off0000ee34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE34 10740 bytes
SHA-256: d21693046631452527f5ac3d506fd5a0a54f3e3c03892dc974ebb4bbf5d157ac