Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df9eabf0354bca5…

MALICIOUS

PDF

134.5 KB Authoring application: QPDF
MD5: d1c9a55ce400339186399ab514f83429 SHA-1: e90e644aeabcf4dd23f70e1fe6505bd87e696376 SHA-256: 8df9eabf0354bca5b7f642fd8d856dcc483093dba5eb6f74c39c2e0e6e9c0cb0
150 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external links, with the primary domain being 'officermnop.com'. These links are likely designed to redirect users to malicious sites, aligning with phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

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://officermnop.com/uploads/1/3/0/6/130604427/3695878.pdf
    • http://muziksingapore.com/uploads/1/3/0/4/130483343/f18d47e0ce.pdf
    • http://cameronpoydras.com/uploads/1/3/0/6/130639347/5501725.pdf
    • https://soromejerex.weebly.com/uploads/1/3/0/2/130272390/6951066.pdf
    • http://songofthelarkmusicforthesoul.com/uploads/1/3/0/6/130603913/somenogixowoluj_gujajofuwira_bopuvep.pdf
    • http://realmandrake.com/uploads/1/3/0/5/130588588/d6b61d.pdf
    • http://taylorlench.com/uploads/1/3/0/2/130271103/93523c.pdf
    • http://moderndayman.org/uploads/1/3/0/6/130621206/misifiditaxemakapibi.pdf
    • http://rehphotography.org/uploads/1/3/0/6/130622106/130622106.html#pixel+royale+unknown+battleground+survival+game

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000131f.bin
8a2d71f101697e487f46e56dccb86e2f9e9f7bcd1303cdcbaac88e203e10e097		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131F 8908 bytes
font_01_sfnt_off00008e59.bin
75ae80f73d03b2804063d160e210b7fee6774f21343ee4897d5c930e9436beb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 11348 bytes

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