Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabb49954d3a902e…

MALICIOUS

PDF

65.7 KB Created: 2020-12-23 05:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a9098e7bf3a1a965c03e7e9a08cdb40c SHA-1: 1a6939aa00a431dd89d39670adf9c3dc0ddab781 SHA-256: dabb49954d3a902e212541cbc09675a594d25977edba79b11f7f394d334b4571
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1559.001 Component Object Model Hijacking T1059.007 JavaScript

The PDF document contains a lure related to a 'Holmes electric heaters recall' and includes a URL pointing to 'traffking.ru'. Heuristics indicate it's a password-protected archive lure and a callback phishing lure, suggesting the document is designed to trick users into taking a harmful action. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/123?utm_term=holmes+electric+heaters+recall PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f9da741dff55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_5f8d5570995f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8801f51c16c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486537/normal_5fb982d387545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378621/normal_5f9cb38ec5867.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fe12e3787b1197541ecf5c6/t/5fe1520876f612648cb7da01/1608602120712/android_bitmap_scale_quality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0d857fa-ed71-40f7-9eb6-a4a3a16469af/72672437793.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5886bc819f1cf4cfb483/1606375559012/nukoniba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1badfdeb-45a8-4365-9b86-8908a8ac9c9f/answering_machine_google_translate.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56c853398ff75154c3188/t/5fccdf8e920f47545b93638b/1607262095944/32022824806.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/words_that_rhyme_with_tree.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/zaxitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a395e4cc-ee36-4298-bf23-705bae817711/davatagovizidiz.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_off0000c382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC382 5000 bytes
SHA-256: ea6be16ac96d0098655e83d414a5a60a5b167d5911adc2f138fb83da31053d77
font_01_sfnt_off0000d451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD451 11356 bytes
SHA-256: 032688fdb39e3715a6f4fef0cc912280ba3736eb8079c2cad736d62cccd5c088

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