Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73610bc1bc7ca10…

MALICIOUS

PDF

39.6 KB Authoring application: Inkscape
MD5: 349335e447a1d566dbf7a92d71f29428 SHA-1: eefcea079fc2224076e6d269f99d0c378f04fb4f SHA-256: f73610bc1bc7ca100f32b20cc68afc8bf08109f9e09dc5471d151d4cfc69db3e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The primary heuristic identified a large number of external PDF links, suggesting a link farm or distribution mechanism. The document body contains text related to 'Neutron scattering cross section nist' and includes numerous URLs pointing to PDF files on various domains, reinforcing the link farm observation.

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://atmemorylane.net/uploads/1/3/0/2/130289400/levazipiluk-kasuragobigove-fajubiwuloto-talirodo.pdf
    • http://newmiltoneagles.org.uk/uploads/1/3/0/5/130544878/8966949.pdf
    • http://zilusuxeg.nauticflclub.org/uploads/2020/01/28/6282227.pdf
    • http://csraisc2.com/uploads/1/3/0/2/130270904/roxijuj.pdf
    • http://creativeagencylosangeles.com/uploads/1/3/0/7/130739183/cafff2ffd539a.pdf
    • http://hollyziemer.com/uploads/1/3/0/4/130476313/5159765.pdf
    • http://elvination.com/uploads/1/3/0/5/130588319/4003746.pdf
    • http://comfish.com.au/uploads/1/3/0/4/130483808/puxer-waboleb.pdf
    • http://metzteaching.net/uploads/1/3/0/4/130476074/130476074.html#neutron+scattering+cross+section+nist

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000119b.bin
1d3f454be5479ceeb394c1b570f477b5ba2dabad4c88e95d945ca7887d2033aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119B 8020 bytes
font_01_sfnt_off00005e7d.bin
0cb224e0972ddf0e19e58e068ac9489570e11434c0106897f09526456610955e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7D 2988 bytes

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