Malicious PDF — malware analysis report

Static analysis result for SHA-256 5468ff8a7818a3e5…

MALICIOUS

PDF

35.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 9b85344f4efec925aa620ce35c9c0dba SHA-1: ea6ba8147b5713c2948a656e493cc00582a81d5c SHA-256: 5468ff8a7818a3e5f53de26f6cce82de0ade7f96525b91db5350c08bd8144d43
150 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with the first being http://myamigo.net/uploads/1/3/0/2/130287529/7018b1aa1596c.pdf. This suggests a phishing or SEO manipulation tactic. The ML_NYX_PDF_MALICIOUS and ClamAV detections further confirm the malicious nature of the file. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://myamigo.net/uploads/1/3/0/2/130287529/7018b1aa1596c.pdf
    • http://lerevepianos.com/uploads/1/3/0/4/130476248/pupemukevox-jafirubajowixij-zoxesesab-roxidezemenujo.pdf
    • http://morganstermiteandpest.com/uploads/1/3/0/7/130775361/rujuzodub.pdf
    • http://ridgelyes.com/uploads/1/3/0/6/130639906/5513723.pdf
    • http://morinoyouchiennagaoka.weebly.com/uploads/1/3/0/5/130588328/vezagido.pdf
    • http://cathellwilliams.com/uploads/1/3/0/6/130604226/zadezum.pdf
    • http://newspechomes.com/uploads/1/3/0/6/130604179/mipuvilixodugun.pdf
    • http://beingself-centered.com/uploads/1/3/0/6/130639472/130639472.html#sap+bw%2F4+hana

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001127.bin
f1498003bf963f0a7f6f63c3d14604219d32d432016459957d0526f9f531169d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1127 7536 bytes

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