Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf2d91c5c299c98…

MALICIOUS

PDF

36.1 KB Authoring application: GIMP
MD5: ed38eae2ddfde55e0f34213682cb5149 SHA-1: 722c5af217c124e70f434249cd8d267eabf104ba SHA-256: 8bf2d91c5c299c989086aaaf6b04eddfe2cb73ef48e366133570907876d9f498
182 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to other PDF files, suggesting a link farm for SEO or traffic redirection. The document explicitly requests sensitive information such as recovery secrets or private keys, which is a common phishing tactic. The ClamAV detection further confirms its malicious nature, identifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of compromise.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://meridional.org/uploads/1/3/0/5/130550690/jigusufir.pdf
    • http://cardsmovinginc.com/uploads/1/3/0/5/130539107/noromibanegifumijajo.pdf
    • http://andymech.net/uploads/1/3/0/2/130273798/vomajubuguzetadosuju.pdf
    • http://adrianbyrdcounseling.com/uploads/1/3/0/4/130476795/6027334.pdf
    • http://mfgm-produkte.de/uploads/1/3/0/6/130639148/4213457.pdf
    • http://detourtowonderland.com/uploads/1/3/0/6/130621367/dixanuxik.pdf
    • http://dotcommemo539.weebly.com/uploads/1/3/0/2/130291707/dosir.pdf
    • http://1stpage.co.nz/uploads/1/3/0/2/130289240/waletumakarajib-mazovolelojiji-zedudaz-foboxavu.pdf
    • http://petportraitsbyjanedolan.com/uploads/1/3/0/5/130541023/5749210.pdf
    • http://pacificnwevents.com/uploads/1/3/0/4/130476035/130476035.html#fusee-+primary.+bin

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001220.bin
1c9666c5f7ffb82115da2514696abbc6b9e55698d1988a5e5968b1b1c6d3577b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1220 8480 bytes

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