Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b1d708b297bede…

MALICIOUS

PDF

38.8 KB Authoring application: PDF Studio
MD5: 7426b764d340a33624ed58a54d6a5ff0 SHA-1: 1743ddea306e4d4a169aa9fcf15be0a39bc89ad7 SHA-256: c0b1d708b297bededaaddb9d3262714f564bd2bd2676c91f5b0b6f279a729f63
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a significant number of embedded external links, characteristic of a link farm used for phishing or malware distribution. The heuristic PDF_SEO_LINK_FARM specifically flagged this behavior, noting the dominant host 'fagew.vizitki-listovki.ru'. The embedded URLs are the primary indicators of compromise.

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://fagew.vizitki-listovki.ru/uploads/2020/01/27/jamugokoxeseruzo.pdf
    • http://munumoti.freeknightcash.com/uploads/2020/01/27/nijoluma-zuliwanol-mogilagotu-kefifovuxurin.pdf
    • https://jukifijamipowa.weebly.com/uploads/1/3/0/3/130323406/3658923.pdf
    • http://asaplawnandlandscaping.com/uploads/1/3/0/6/130620880/kudufimesegawebikibe.pdf
    • http://xkvate.com/uploads/1/3/0/6/130603715/bazujejawutopo.pdf
    • http://lonestardbc.org/uploads/1/3/0/6/130604344/divixepole.pdf
    • http://urfacefix.com/uploads/1/3/0/6/130620520/130620520.html#do%C4%9Fal+%C4%B1%C5%9F%C4%B1k+kaynaklar%C4%B1na+%C3%B6rnekler

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001340.bin
c54f2a05d722a630417bdb98f92a94ca4bef616ab9d00acee1d5a18e1850724c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1340 8804 bytes
font_01_sfnt_off00004ec4.bin
cf221213b2a0eb24b017e68b9e2ebe053727bc9a9d95611ed39b1e9bd298f7bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC4 16888 bytes

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