Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb05f7df16c321d…

MALICIOUS

PDF

97.8 KB Authoring application: OpenOffice Draw
MD5: 3f18538c2c0547d05a35cec4d8cae496 SHA-1: abb27b8d98dca4883545b412aa226ea667bd0135 SHA-256: cdb05f7df16c321d5b242b3512674cef1074d8cd8ed8319b253ccaf1ba45d0c2
128 Risk Score

Malware Insights

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

The PDF file contains a link farm with multiple embedded URLs, a common technique for distributing malicious content or conducting phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware delivery intent. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a large number of external links, likely to obscure the true malicious destination or to game search engine rankings for malicious purposes.

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://hitchly.com/uploads/1/3/0/3/130323929/keninemuki.pdf
    • http://kingdomleadership.net/uploads/1/3/0/7/130739376/mufomed.pdf
    • http://zogo.apsmoney.com/uploads/2020/01/29/2272109.pdf
    • http://algaebookandpaper.com/uploads/1/3/0/6/130639178/9cceebcbd1889.pdf
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/6/130605164/130605164.html#post+cardiac+arrest+care+ppt

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001131.bin
ee18e1b88b10bf1c855e940006d621df6b685fb22a4844543f47f0d45d35dc00
pdf-font-stream PDF embedded font (sfnt) at offset 0x1131 8720 bytes