Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc9d71725449a86a…

MALICIOUS

PDF

42.3 KB Authoring application: SWFTools
MD5: f1006efc778d17c53bf8f1b6039fc047 SHA-1: e0ce18a2ae5405ae2fec33fbe7f5c89d8c4b701c SHA-256: bc9d71725449a86ac38f27d0ad22663c4d70c7e6e421a5cee9c89e0c32956385
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by multiple engines, including ClamAV, which identified it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The primary heuristic firing indicates a PDF SEO link farm, containing numerous external links to other PDF files hosted on various domains. The document body also contains these embedded URLs. This suggests a campaign focused on directing users to potentially malicious content hosted across a wide range of domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://merakiskincare.net/uploads/1/3/0/3/130379821/9467729.pdf
    • http://misspaulasyoga.net/uploads/1/3/0/2/130272333/7205094.pdf
    • http://inafip.org/uploads/1/3/0/4/130475909/2c78f.pdf
    • http://davidcarere.com/uploads/1/3/0/5/130544591/a10a9b2545f6a2.pdf
    • http://natashacorriephotography.com/uploads/1/3/0/4/130489168/8fdabf3b4f5ce2e.pdf
    • http://mountvernonparking.com/uploads/1/3/0/4/130483645/1125b11b1c7.pdf
    • http://nowhiringheroes.net/uploads/1/3/0/2/130289731/90083.pdf
    • http://wannahotgirlss.online/uploads/2020/01/28/bc3054dd7f3b5.pdf
    • http://urmomcast.com/uploads/1/3/0/6/130603889/vebibujewuloxo.pdf
    • http://shopofficeglam.com/uploads/1/3/0/5/130538937/9acf903c11f12ca.pdf
    • http://quirkytowers.com/uploads/1/3/0/2/130272234/975689.pdf
    • http://thehappygirlstore.com/uploads/1/3/0/6/130639733/130639733.html#riptide+uke+strum

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012a7.bin
2810c3b47303b8ab23a7a1f49c519e993b373c266a7b2c605a4b67da2fce2c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7 8240 bytes
font_01_sfnt_off00005eb6.bin
7452b6b49b2d67df973eecb7580c7a2fe344bf55d7b957b3ade50b6969c50269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 16068 bytes

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