Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fe56fcd212c56a…

MALICIOUS

PDF

30.1 KB Authoring application: SWFTools
MD5: 4a1fd685b7a87d613ac6e2c3a5dce6b3 SHA-1: 11b0266b44088c87e3c06a87452b02a08f87626b SHA-256: d9fe56fcd212c56ab9568861fa9ce196fd25f3f9bae26ede5784caf21bc255a7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample.

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://anotsoemptynest.com/uploads/1/3/0/5/130540406/8160ffedc71.pdf
    • http://zigafi.clearcaptioner.tech/uploads/2020/01/28/3410714.pdf
    • http://simplymetering.com/uploads/1/3/0/7/130739185/vodapoduvu.pdf
    • http://thedarlinshop.com/uploads/1/3/0/5/130539645/dae6a3943c00c.pdf
    • http://nzwildlifeartist.com/uploads/1/3/0/2/130289204/985d0053c3.pdf
    • http://frutaartesana.com/uploads/1/3/0/4/130483748/2331467.pdf
    • http://stjames-madnews.net/uploads/1/3/0/6/130620370/lotivakuzejesa_xarerirunasol_labukuwofonapi.pdf
    • http://mrkrieg.com/uploads/1/3/0/5/130551423/765145.pdf
    • http://watestingllc.shop/uploads/1/3/0/7/130775162/130775162.html#geografia+fisica+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000119d.bin
b472fdb0ee1cf65d032920c3a16a48ee865e9dc70601b1e20d4d69c5934ef4b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119D 9160 bytes

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