Malicious PDF — malware analysis report

Static analysis result for SHA-256 7575f1519bc9f6b8…

MALICIOUS

PDF

37.9 KB Authoring application: GIMP
MD5: 8a237745a7b9fd68bd051b5c47c1165a SHA-1: ddf9693f0f3d2b9049d1b44d42d5e72a50cffafd SHA-256: 7575f1519bc9f6b8b037ee4d23e8764a80d40842e055fc251eaae5ce8bb50ae5
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to redirect users to malicious content. ClamAV detection and ML classification further support its malicious nature. The presence of embedded URLs indicates an attempt to lead the user to external malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://nandamay.com/uploads/1/3/0/6/130639551/datazab-wixuru-pelekikapabi-zamugotiruw.pdf
    • http://4rtik.com/uploads/1/3/0/6/130604254/caa35c9c.pdf
    • http://kpeggphoto.com/uploads/1/3/0/5/130588778/969587.pdf
    • http://e3financial.org/uploads/1/3/0/3/130312964/9263445.pdf
    • http://fundraising-career.com/uploads/1/3/0/5/130543032/5413013.pdf
    • http://laurencegestalt.com/uploads/1/3/0/4/130435820/2453131.pdf
    • http://bctee.com/uploads/1/3/0/6/130640060/7018c2a09.pdf
    • http://bizafur.martinsembalagensam.com/uploads/2020/01/28/252badc4c9b.pdf
    • http://ruxemisora.101doggy.com/uploads/2020/01/28/rigodiba.pdf
    • http://rochecenter.org/uploads/1/3/0/6/130620469/130620469.html#guion+teatral+de+los+tres+cochinitos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001230.bin
9e66d210b24195131dafb42a9c1ce2e79d8c7ebdb8c13205f35f0aa9dd93a19e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1230 9024 bytes

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