Malicious PDF — malware analysis report

Static analysis result for SHA-256 c63051f090fe2c64…

MALICIOUS

PDF

42.2 KB Authoring application: OpenOffice Draw
MD5: e353bf138522d1318e8d94b183a6045c SHA-1: fc00b4991836d2359ad48dd0f53e5936700433e4 SHA-256: c63051f090fe2c64e616f3d9dfd2e4d8dc8ea310a6705a9aaa9f8546782e2040
130 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm or distribution mechanism. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or malware distribution campaign. The presence of a visual download button further supports a lure-based attack pattern.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://newglasssingapore.com/uploads/1/3/0/5/130588573/mavaribibegexu.pdf
    • http://milexy.com/uploads/1/3/0/6/130639025/27e93628c5e7e.pdf
    • http://melissaneckphotography.com/uploads/1/3/0/3/130379474/nalerarorimoda_vozotof_xukotefi.pdf
    • http://nicolitulk.com.au/uploads/1/3/0/5/130539432/130539432.html#amplified+bible%28+amp+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a9.bin
ce561629bb34bdf5fec55a59a2958f562ba583271698aa6f0add2ddcfab31834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9 8336 bytes
font_01_sfnt_off0000545d.bin
b7faae6f59271c827a8f855e85243bc7b3eb0f5cee4b0ec8d62c60289236119a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545D 19556 bytes

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