Malicious PDF — malware analysis report

Static analysis result for SHA-256 445b8e9de4fd7147…

MALICIOUS

PDF

39.6 KB Authoring application: Scribus
MD5: 458f2c21b40e48b0645082f7dde9ab45 SHA-1: 9ca5c53e0b910c98d04ef6211357a8c0d6322c85 SHA-256: 445b8e9de4fd7147d91a1053e785adb4f4313d45ae97443281f149f2babfcf48
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs pointing to external PDF documents. This is indicative of a link farm or a phishing campaign designed to lure users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports this assessment. 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://rostelekomrt.host/uploads/1/3/0/3/130323515/7230088.pdf
    • http://corrpass.com/uploads/1/3/0/4/130492771/tomawole_vonisizikaxusu_judewo_sikolesofuge.pdf
    • http://puntodeapoyo.es/uploads/1/3/0/6/130621622/kejaruralusexop.pdf
    • http://officermnop.com/uploads/1/3/0/2/130289377/nuwaxazewu-turokoridawonuv-pufoxamas.pdf
    • http://richardsnashall.net/uploads/1/3/0/5/130551586/luxasiwuna_waxukijujorimun_gubaxazo.pdf
    • http://cestagift.com/uploads/1/3/0/6/130639635/120b6406.pdf
    • http://stand2serve.org/uploads/1/3/0/3/130379430/1859064.pdf
    • http://thesketchytherapist.com/uploads/1/3/0/6/130621305/jojaviri.pdf
    • http://ololparish.org/uploads/1/3/0/5/130538987/gonatuzepeze_wobewu.pdf
    • http://jamesbaylee.com/uploads/1/3/0/6/130604248/130604248.html#chef+cookbook_file+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001260.bin
ecec2ccb4b1ffa900695b72fc07068de756438cd121d2baaafeaf2bbb3f1dca6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1260 8168 bytes

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