Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde33b9326cfa0e5…

MALICIOUS

PDF

34.4 KB Authoring application: OpenOffice Draw
MD5: 7aa767cc4f13730f87844cfea95508c0 SHA-1: 3a7933e1448d0582df8f030d94044ff2a1726c4f SHA-256: dde33b9326cfa0e5b13190d313e766ea3f6730e8650f8b09544ead5ae6739f0f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. Static analysis revealed a 'PDF_SEO_LINK_FARM' heuristic, indicating the presence of numerous external PDF links. The document body contains multiple URLs, all pointing to external PDF files hosted on various domains. These links are likely part of a phishing or malware distribution scheme, aiming to lure users to download further malicious content.

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://rhworkplace.com/uploads/1/3/0/5/130589085/62ba760c0508.pdf
    • http://mystylesheets.com/uploads/1/3/0/5/130543877/1152294.pdf
    • http://nu-trek.com/uploads/1/3/0/6/130639941/81afc0b4b33b0.pdf
    • http://localleadgame.com/uploads/1/3/0/6/130604176/3353052.pdf
    • http://firstmelissa.org/uploads/1/3/0/4/130488213/momaza-belewejiwig-nagopilo-saluliba.pdf
    • http://votebyronmartin.com/uploads/1/3/0/6/130620309/3abcafbe55f.pdf
    • http://cityonloc.com/uploads/1/3/0/2/130272551/130272551.html#advanced+abstract+algebra+lecture+notes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129e.bin
4828418529e182e0f54c7c683624df85b8c416a3eb4bcde2c387b5afee2e8259		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129E 7996 bytes

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