Malicious PDF — malware analysis report

Static analysis result for SHA-256 75754a949c50f8f6…

MALICIOUS

PDF

71.4 KB Created: 2020-12-19 04:27:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 62cb895290ec6564e8aa123762a5d4d7 SHA-1: d98c5fa2d6172d4f084e5911b671fd3260ec4dab SHA-256: 75754a949c50f8f628329ac1aef6ff98633875fd62407cf49201cc3f941b1327
262 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by multiple heuristics, including a critical finding for a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to payment or money management. The presence of numerous embedded links, many pointing to PDF files on external sites, indicates a link farm designed to distribute malicious content or phish users. The ML classifier output of 0.999726 further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://traffine.ru/strik?utm_term=money+management+international+reviews+bbb In PDF document text
    • https://tevuvusit.weebly.com/uploads/1/3/4/3/134373155/gedup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485807/normal_5fbe7e2968eaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5fca23e88103e.pdfIn PDF document text
    • https://zopivorideruv.weebly.com/uploads/1/3/3/9/133997575/5e6b43b704bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417998/normal_5fa475b355911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_5fc0f882666d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500417/normal_5fd3bee3bb862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413848/normal_5fad27148f938.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_5fa0a9cf4ce61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_5fba6e62c2dd8.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/3361586.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478683/normal_5faaf18c5a8d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374372/normal_5fbf4e519b722.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/63022f9c-b6d4-4870-8ad3-50cacf0314a7/gorilla_mindset_free.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_off0000db07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB07 5404 bytes
SHA-256: f7df6e9f3bc2227cb17a0f40df2af122650e8b197918f13bd4361f7c2f105c3b
font_01_sfnt_off0000ed75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED75 10500 bytes
SHA-256: 2c63786f01cf2ebf845101664fcc9bf151cd45c4c33fc4ca26035a0380bddbaa

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