Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a899e2792cbfba…

MALICIOUS

PDF

36.5 KB Authoring application: Mobipocket Creator
MD5: 8073ca18e9d28aa86bdcccc119c76861 SHA-1: f60f8aabcc4297cc85b9e2f751a9c12a54c7af5b SHA-256: a6a899e2792cbfba0f7255f078a04420b34ccea009fd0cd75e531cecfdc1ccdc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. This technique is commonly used to distribute malicious content or redirect users to phishing sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. The document body itself is heavily obfuscated and contains many of the same URLs, reinforcing the link farm attack pattern.

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://nesoinc.com/uploads/1/3/0/6/130639045/2382035.pdf
    • http://canopymgm.com/uploads/1/3/0/6/130639355/625b143dc6.pdf
    • http://speed-gemmes.com/uploads/1/3/0/6/130639903/mapojurumuluni.pdf
    • http://avendo3.icu/uploads/2020/01/28/wedepe.pdf
    • http://bodybydrea.net/uploads/1/3/0/6/130640092/pedositajize_gelajaxunopu.pdf
    • http://anofasonline.com/uploads/1/3/0/5/130589178/bb2ea37bb2dfe.pdf
    • http://mvillstyles.com/uploads/1/3/0/5/130588653/rifewodo-jufataluboxo-tikolimipugizax-jawozukutow.pdf
    • http://bbt.network/uploads/1/3/0/2/130288751/jifagavagoj-zomimoxuxoxipu-paravoponit.pdf
    • http://diradevelopments.com/uploads/1/3/0/6/130620792/130620792.html#integral+ders+notu+%C3%B6zel+%C3%B6%C4%9Frenci

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000147d.bin
fcf560d02b664edda1328d7e1830a27853a14c6d7d6cd40ebf066ab7c0e40315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x147D 10336 bytes

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