Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6b5b595b9ec67de…

MALICIOUS

PDF

86.8 KB Created: 2020-11-18 18:57:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4a300d195b0e5a8fb3837327f78a3bc9 SHA-1: 361f84e997adcd9b69e919c3826b00abf3b31008 SHA-256: f6b5b595b9ec67decd52e70f4f5644a5e8fc5f5eefcb7aa5af0c300fb6636571
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it is likely a phishing or trojan distribution attempt. It contains a link to known malicious redirector infrastructure, traffmen.ru, which is designed to lead users to further malicious content. The heuristic 'SE_INVOICE_LURE' suggests the document's content is intended to deceive the user into clicking the link by impersonating an invoice or payment request.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/123?utm_term=a+philip+randolph+apush+ch+22 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381095/normal_5f8ebfaf8a356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f86fd19da8a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87253044786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391611/normal_5f9c7871167ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473064/normal_5fae0081baf2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444092/normal_5fa7ff7692ab0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5f9b27408c2eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5f8cea649ab5c.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/dazifozixawus/7160982703.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/73019912652.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/jexupid.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/bomadomot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20de1ea4-fccb-4a0e-9d3c-2518dfb49809/gopuxitedadasozefimo.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/heather_haley_age.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_off00011439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11439 5280 bytes
SHA-256: feafd1342acbd1076d14354244d23b6588ca8ae95872117074362610f9ec8db0
font_01_sfnt_off00012629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12629 12028 bytes
SHA-256: 55c0148823953f8306e0b3cad3670c91a1e0cdafdd9535be367904609962d5cd

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