Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f22d6bf9804fbc1…

MALICIOUS

PDF

87.4 KB Authoring application: Nitro PDF First seen: 2020-09-24
MD5: d13c4eef1777903acdfd17e9c5f4ebe3 SHA-1: 2cb1abd00860285520fd1bf5a73047fb1c4ba802 SHA-256: 1f22d6bf9804fbc106470c28359d6265ec6913206d932ae3f7f22531e0ccf776
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files, a technique often used for SEO manipulation or to host malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and ML classification strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 http://mich-interiordesignllc.com/uploads/1/3/0/2/130289797/fijozulogagubag.pdf In PDF document text
    • http://nakomahomesandland.com/uploads/1/3/0/5/130540128/getafevujojenugo.pdfIn PDF document text
    • http://alpharettapestpros.com/uploads/1/3/0/6/130604561/37a7c4b2dfbe.pdfIn PDF document text
    • http://rachelnamba.com/uploads/1/3/0/2/130288861/1b203.pdfIn PDF document text
    • http://sansouciart.com/uploads/1/3/0/5/130543099/a49c0a7a.pdfIn PDF document text
    • http://bmrwv.com/uploads/1/3/0/2/130273625/a328962fe44ce2.pdfIn PDF document text
    • http://absystemsllcscam.com/uploads/1/3/0/6/130621937/130621937.html#yugioh+gx+duel+academy+codebreaker+cheatsIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF 9084 bytes
SHA-256: b735a6c0b28414b83f11b84dcaa452b3f4b23f43095c5cb9096577b723e941e7
font_01_sfnt_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 16096 bytes
SHA-256: 98983989aee617804bfb2b69dc6f6f805939a98a2ee6a1190dcf619e05322181

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