Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1e773907bc93c8…

MALICIOUS

PDF

33.3 KB Authoring application: LibreOffice
MD5: d0b3e1b7ac98a0fb0fd456ed69e472d0 SHA-1: 3e61128c6e40fe25e4e86ef7e8ab4f02c8f47e5a SHA-256: fb1e773907bc93c85d13f61a913b2ddaf522dee1f9ff9b9c02ce2404e391e960
140 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used in SEO poisoning or phishing campaigns to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' and the presence of multiple unknown URLs strongly suggest this malicious intent. Additionally, the 'SE_CALLBACK_LURE' heuristic indicates a potential callback phishing or tech-support scam context, further reinforcing the malicious nature of the document.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://mrzwiring.services/uploads/1/3/0/6/130620979/3516ecab56.pdf
    • http://pacayas-farm.com/uploads/1/3/0/4/130489371/7702484.pdf
    • http://riji.vipiski-besplatno14.icu/uploads/2020/01/27/bapubawavox.pdf
    • https://penokone.weebly.com/uploads/1/3/0/5/130551564/3ea1f053e368.pdf
    • https://pabifuzeb.weebly.com/uploads/1/3/0/5/130543054/kasunes.pdf
    • https://mevozeruzavar.weebly.com/uploads/1/3/0/5/130541131/zusunagupufagiza.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/6/130604254/130604254.html#yellowstone+fly+fishing+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010d1.bin
3594d36b64cf4dd9908bf2653c0857b2deb082cc0ce004a80974b7dc0fc23960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1 8368 bytes

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