Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e62465d903be974…

MALICIOUS

PDF

45.0 KB Authoring application: OpenOffice.org
MD5: 591a0afef482bbc9f7bd021558d184f1 SHA-1: 6377024dd03a8d535672b73f9ba662542b00cfe8 SHA-256: 6e62465d903be974b6850651bacaf9868c48e5e484eeae629c2eef0817cf68ae
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The critical PDF_SEO_LINK_FARM heuristic identified a large number of embedded external PDF links, suggesting a link farm or redirection mechanism. The document body also contains these URLs, reinforcing the idea that the file's primary purpose is to direct users to potentially malicious content hosted on external sites.

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://notestotheunderground.com/uploads/1/3/0/2/130289295/2e0f885a.pdf
    • http://centraleuropeanstringquartet.weebly.com/uploads/1/3/0/3/130379078/2216546.pdf
    • http://3f9d7d34b1371af6edffdafb9e4db3a9.com/uploads/2020/01/28/2333033.pdf
    • http://my-english-lesson.us/uploads/1/3/0/2/130289495/zilafitu.pdf
    • http://newgriffinbaptistchurch.com/uploads/1/3/0/5/130590059/2073031.pdf
    • http://midwestlegalpartners.com/uploads/1/3/0/4/130435511/zurizufevam-baloxigagebedew-makibat-rijewarado.pdf
    • http://translogistic-svc.com/uploads/2020/01/28/rutuxejomujumujaj.pdf
    • http://balancehealthandwellness.net/uploads/1/3/0/3/130324203/6669f.pdf
    • http://tokebulegu.chinafication.com/uploads/2020/01/28/tonetumodejebul.pdf
    • http://arapahoepainting.com/uploads/1/3/0/6/130639706/6299306.pdf
    • http://mychangingthenarrative.com/uploads/1/3/0/4/130483906/b2a56aebb06eb0.pdf
    • http://mjtcounsel.com/uploads/1/3/0/6/130620209/derobatipafivakuvu.pdf
    • http://pameladirnberger.com/uploads/1/3/0/2/130272600/130272600.html#weigh+tronix+wi+125+scale+troubleshooting

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012d6.bin
27c246c7e8cb0f13522b26792813d0cc3e06693c14c429ddcc2614d2542ab486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6 6524 bytes

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