Malicious PDF — malware analysis report

Static analysis result for SHA-256 284df143377a33c9…

MALICIOUS

PDF

32.8 KB Authoring application: Solid Converter PDF
MD5: 1a9134cbc3a1e6f5b5d05d2d9b679626 SHA-1: 4f0de91c28d44e641bab05af655a250ab65ac629 SHA-256: 284df143377a33c9e0c181cc61cfb8466140afba2b35b16a46fab2aff8e39272
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains. The ClamAV detection and ML classifier also flagged this file as malicious, suggesting a phishing or malware distribution campaign. The primary function appears to be directing users to potentially malicious content hosted externally.

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://moldremovaltarzana.org/uploads/1/3/0/6/130604885/774147.pdf
    • http://www.renegatx.hu/uploads/1/3/0/7/130775413/78d7f531e934.pdf
    • http://kalikaservicesindo.com/uploads/1/3/0/5/130588984/mitakaxox_kukowisowodusu.pdf
    • http://anonnetwork.net/uploads/1/3/0/3/130313555/wosajogim.pdf
    • http://www.globalscio.com/uploads/1/3/0/2/130272094/lagejadopi.pdf
    • http://www.stephanietinoco.com/uploads/1/3/0/8/130873810/669bf96e74d7c.pdf
    • http://musicroots.club/uploads/1/3/0/6/130639486/8c557e920fb3375.pdf
    • http://cams-collection.com/uploads/1/3/0/4/130477126/wofuzokevogaka_wosizul.pdf
    • http://www.pgibsonralph-theatredesign.com/uploads/1/3/0/8/130813649/miboxukabewik_rularo_wogid_daziluxokikiba.pdf
    • http://www.malaysia-tours.my/uploads/1/3/0/6/130620437/7269071.pdf
    • http://71-159-221-62.overtimefitness.com/uploads/1/3/0/4/130483067/130483067.html#3+structures+found+in+plant+cells+but+not+animal+cells

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a7f.bin
9cc01fecd0102ad045599e34543eae999f1cbd875b995164cec1a7b858b5feff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A7F 7740 bytes

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