Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d18d7bf1dda80d6…

MALICIOUS

PDF

36.5 KB Authoring application: Smallpdf Desktop
MD5: 5711b4d5c2e93882b39e9ac1d0d8a026 SHA-1: 6368ca206bdb597eeb5c44ef1301ebd46dbe77a4 SHA-256: 9d18d7bf1dda80d6aebade62872806713b96cdc09e4982a2b7b517e1362c1dac
128 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates the presence of multiple external links, suggesting a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, pointing to potentially malicious content hosted on external domains.

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://jeffreyvictor.net/uploads/1/3/0/6/130604028/6638126.pdf
    • http://bonkerforbyram.com/uploads/1/3/0/5/130588762/1256796.pdf
    • http://sisterchristensensehteam.com/uploads/1/3/0/6/130605253/9763530.pdf
    • http://outdoor-enhancements.com/uploads/1/3/0/3/130313199/kijalimunewoloverar.pdf
    • http://norenuf.mactak.center/uploads/2020/01/29/5801661.pdf
    • http://slyfoxservice.com/uploads/1/3/0/6/130620783/jevigobomogufasam.pdf
    • http://misbailes.com/uploads/1/3/0/5/130551219/130551219.html#present+simple+worksheet+grade+7

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001134.bin
535d4e0e036d8d912d832ce98ed342191d6a260e221d7c6e611d9161af7316e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1134 8924 bytes

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