Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb45a81bf07078a…

MALICIOUS

PDF

28.3 KB Authoring application: Scribus
MD5: 6eb443906d5daa04a732a1a96b47e2f9 SHA-1: f810b53f6e93b53bad5a4130ba22537a029da1e1 SHA-256: 5bb45a81bf07078ad0747c20f76753c4e7a21e27e2b5c138221ffc07352ea898
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO abuse.

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://ameliaquilts.com/uploads/1/3/0/5/130543653/3641822.pdf
    • http://nerdyneet.com/uploads/1/3/0/2/130288465/8332160.pdf
    • http://myhealthacupuncture.com/uploads/1/3/0/2/130289277/sewev.pdf
    • http://migratorypathways.com/uploads/1/3/0/5/130588333/rudovisubolidiw.pdf
    • http://peachesncream.blog/uploads/1/3/0/6/130604487/potoxave.pdf
    • http://yahonlytimes.com/uploads/1/3/0/5/130551907/patorudu-bexupamajidonov.pdf
    • http://royfonte.com/uploads/1/3/0/4/130489175/5a15834c84.pdf
    • http://evitabanana.com/uploads/1/3/0/6/130620752/b907f8.pdf
    • http://miniactionfigure.com/uploads/1/3/0/7/130740055/jifaw_gizapebowab_kepibivu_jogir.pdf
    • http://www.halecountyrookies.com/uploads/1/3/0/2/130288511/bf615ac74.pdf
    • http://envt225malta2019.com/uploads/1/3/0/7/130775701/6600011.pdf
    • http://www.studiogabana.com/uploads/1/3/0/6/130620456/8295122.pdf
    • http://www.testfimba.com/uploads/1/3/0/8/130874099/94b81ce.pdf
    • http://74-123-72-236.mgwnet.com/uploads/1/3/0/6/130620843/130620843.html#atlanta+time+machine

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000182f.bin
9d396d329ca687d6669e37091da3004931220629dc4660f9a6eb290f469eeaac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x182F 6928 bytes

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