Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd2649b0ed97b66…

MALICIOUS

PDF

40.9 KB Authoring application: GIMP
MD5: b7fd55675e4518450ddba0140b18e740 SHA-1: c5d33df7d64dd819efc485d15265b5998231b88a SHA-256: ffd2649b0ed97b667bdbfa7640a1acf84c6d3d5e442c374ee648caf10138046a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 User Execution: Malicious Link T1566.002 Phishing: Spearphishing Link

The sample is a small PDF containing a high volume of external links, characteristic of an SEO link farm used for traffic redirection. The document body contains a lure for a 'Free english to hindi dictionary download for windows 8', which aligns with the SE_DOWNLOAD_BUTTON heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall' further supports the classification of this file as a phishing delivery mechanism.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://mysmelt.com/uploads/1/3/0/7/130738662/nulogizoj_roniz_dutakefulananix.pdf
    • http://blownproductions.com/uploads/1/3/0/5/130551349/04d5cea2134425d.pdf
    • http://www.stservicesnettoyage.com/uploads/1/3/0/3/130313224/buger_novixe_durolutuzunosi_koduzeju.pdf
    • http://michaudwellness.com/uploads/1/3/0/7/130739443/9945538.pdf
    • http://mindbodymovementarts.com/uploads/1/3/0/8/130814083/9734103.pdf
    • http://casashark.com/uploads/1/3/0/7/130775630/gafipajuloso.pdf
    • http://esatesalebeta.com/uploads/1/3/0/2/130289524/gigimisuvabalironam.pdf
    • http://www.funelteacher.com/uploads/1/3/0/4/130489367/cd8c02ab0.pdf
    • http://leoinspired.com/uploads/1/3/0/5/130588437/9c415c81.pdf
    • http://sunfanglu.com/uploads/1/3/0/2/130272940/97de0a2.pdf
    • http://playhousewestartsfoundation.org/uploads/1/3/0/5/130588867/130588867.html#free+english+to+hindi+dictionary+download+for+windows+8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d21.bin
d80f3d2cca52603524a074d611e27e3cb762a037ced4da2fd2b64e833ef7590e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D21 9348 bytes
font_01_sfnt_off000048f5.bin
d53b4a52afffd4833dfaa1baf47ab463a961b1840f389760d059b0ecf162dcdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48F5 8140 bytes

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