Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9cbd8d94db7cca7…

MALICIOUS

PDF

242.4 KB Created: 2020-12-28 06:00:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: bbe2d8a76689a7e0bcddace1d86182c4 SHA-1: ec1dff0e00117c94b6dfb09fa228ce1436fbea71 SHA-256: c9cbd8d94db7cca74b5cc29d6ea9d3363c3a5ef67381c91d1b897d58bb7a10dd
162 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=paris+arrondissement+travel+guide'. Additionally, a machine learning classifier flagged the PDF with a high probability of being malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The presence of urgency language further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffmen.ru/aws?utm_term=paris+arrondissement+travel+guide In PDF document text
    • https://jotulamopusojo.weebly.com/uploads/1/3/4/4/134465369/5798931.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/2406237.pdfIn PDF document text
    • https://bimefitovaj.weebly.com/uploads/1/3/1/4/131437299/5903427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f8d3bd03e039.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/fuwenoxuzasila/76800059256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f941c4b-6301-4877-9c77-0d6785db6c7c/89690249792.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/66474204580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57098f26-1ee0-4314-be91-25fff386f84b/digagomisifolibageviru.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/my_publix_passport_login.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/28250603585.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_off000381a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x381A7 5208 bytes
SHA-256: 186052310c2d6d689d5c60e29ffc56ca40812185ee0e30a6a0f653f44064294e
font_01_sfnt_off0003934b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3934B 11896 bytes
SHA-256: 8f77a3a307ab13c13635c85b14c581991ba26ae7da72ec62817a5750576c7a82

Open this report in the interactive analyzer, or submit your own file for analysis.