Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a3a0dc0aca2f7e…

MALICIOUS

PDF

40.2 KB Authoring application: pstoedit
MD5: eb3656f4681bfdbef49be82aaaf4eba8 SHA-1: 102ec4dd08caa42e7159a7bcf3a31c2458601ef7 SHA-256: d5a3a0dc0aca2f7e45e7c0fc7d8768a1810f11c9b5402e9418fe199cdd054c66
152 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The document body, though partially corrupted, contains text related to 'Actifry potato slices' and embedded URLs, reinforcing the idea of a lure to external content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or spam distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://myvisl.us/uploads/1/3/0/6/130605422/misovi_novavelut_givemurosexopo.pdf
    • http://isabellaink.com/uploads/1/3/0/2/130271080/memaz-letokaw-veridibes-puzelenulax.pdf
    • http://juridicorapido.com/uploads/1/3/0/6/130639540/9038444.pdf
    • http://adoptme.info/uploads/1/3/0/7/130740340/130740340.html#actifry+potato+slices

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000ff2.bin
c9ffe8b52a33f338127a8fc317540651002351b0a0dbe1197947a3581314f593		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2 8344 bytes
font_01_sfnt_off00006351.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 1708 bytes

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