Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d223574c3bcfd57…

MALICIOUS

PDF

34.2 KB Authoring application: QPDF
MD5: daffa462474eed3a89c5ed85cd0c8446 SHA-1: d626a0d41211b96cdfd2e5b5e2ca96b08419cf91 SHA-256: 9d223574c3bcfd57aa2dc5ac33f1947ad36728e226200fd39fd14a7429a51094
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The primary attack pattern involves directing users to a network of linked PDFs, likely to host phishing pages or further malware.

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://vudumedia.net/uploads/1/3/0/6/130604767/nageto_fibamowotafafew_pazosetidolux.pdf
    • http://donthirejerks.com/uploads/1/3/0/4/130488331/10c847f.pdf
    • http://skychaos.net/uploads/1/3/0/5/130588591/dutefat_mowok_jijafa_nurexop.pdf
    • http://kanvess.net/uploads/1/3/0/3/130379295/13cbca3a87205a.pdf
    • http://centraloregoninventory.com/uploads/1/3/0/2/130289688/zupifetedimet.pdf
    • http://braizbistro.com/uploads/1/3/0/7/130738924/vujetunepapima.pdf
    • http://goldenscapegreenhouses.com/uploads/1/3/0/6/130620436/wujima.pdf
    • http://lauraclarkmurray.com/uploads/1/3/0/7/130775031/a85fcedf2958.pdf
    • http://stephaniejacobs-sculptures.com/uploads/1/3/0/7/130739773/rofowejos.pdf
    • http://tristarlogos.com/uploads/1/3/0/7/130738647/9f7a18f20a4a.pdf
    • http://beatdrama.com/uploads/1/3/0/5/130552073/9604501.pdf
    • http://host216.carmichaelnl.com/uploads/1/3/0/2/130272452/130272452.html#airodump-ng+not+working+kali

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d76.bin
9961727e82b23f5be4dbddf415cba1ddc8a697e074b2c1334a56bca0b11a36e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D76 8228 bytes

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