Malicious PDF — malware analysis report

Static analysis result for SHA-256 a540ee3ff44ebaea…

MALICIOUS

PDF

55.2 KB Authoring application: Scribus
MD5: 2819b3c811144de5ea299e2c66797b79 SHA-1: 76a19d4275df6caf0cd6ebbc0f3914a25109eb3e SHA-256: a540ee3ff44ebaeabd399c526dd9d2ab13e1ee8bc51036ba3a291ccd4612fc8f
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The document body mentions 'Cara chess rush pc', which appears to be a lure to direct users to these links. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent, likely related to traffic redirection or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mentalsector.com/uploads/1/3/0/2/130270902/zitepeza.pdf
    • http://9f60dnj005.com/uploads/1/3/0/5/130589415/torefapetug.pdf
    • http://fafoni.epiad.com/uploads/2020/01/28/kopiweko.pdf
    • http://musicatkhs.com/uploads/1/3/0/6/130604348/fukotu.pdf
    • http://webimigi.pyro.ru/uploads/2020/01/29/c9ede5c79.pdf
    • http://nuvisionconstructionservices.com/uploads/1/3/0/2/130272474/92a28ad4cab58.pdf
    • http://experienceearth.store/uploads/1/3/0/6/130620887/8228536.pdf
    • https://vimuzizop.weebly.com/uploads/1/3/0/2/130272438/8f3d7500e3c3.pdf
    • http://sylviafodor.com/uploads/1/3/0/6/130605104/nagodu.pdf
    • http://nickgrossman.net/uploads/1/3/0/4/130483592/1f9f4a80d.pdf
    • http://thehappygirlstore.com/uploads/1/3/0/6/130639445/130639445.html#cara++chess+rush+pc

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00006ad8.bin
edb5f55e2643973b479625ce7abae00bab349fe9fa8ff31003522870b2a7816c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6AD8 11672 bytes
font_00_sfnt_off0000133e.bin
1113e45ce19f0408543ebdadb16ad16a31edac262422be3af6ec71672a2abbf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133E 10660 bytes
font_02_sfnt_off00008ec5.bin
6893d4539cffbf8ac8dd415bcba2cfc335a800cae9d6afea5669493633889205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC5 17000 bytes

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