Malicious PDF — malware analysis report

Static analysis result for SHA-256 986100b90c5c37b1…

MALICIOUS

PDF

40.0 KB Authoring application: Inkscape
MD5: c6a8eabdc0093354cf526ee6135ef46d SHA-1: c5796ea35171c50e99432488de46e1dd8b457f54 SHA-256: 986100b90c5c37b18a775253ab4c34abe721c39e723bf41aa68bca0b366d0bdc
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique commonly used for SEO poisoning or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://sugarpaso.com/uploads/1/3/0/5/130590462/1edca160bf.pdf
    • http://raecatherine.com/uploads/1/3/0/5/130544954/625ad7a1.pdf
    • http://nsanzineza.com/uploads/1/3/0/3/130379123/4358249.pdf
    • http://aliciabygalaktika.com/uploads/1/3/0/5/130588894/eccc7.pdf
    • http://showuplifestyle.com/uploads/1/3/0/5/130588727/c14d18db.pdf
    • http://ronivexu.kincalding.pro/uploads/2020/01/28/6af62.pdf
    • http://collinsmslibrary.org/uploads/1/3/0/2/130271158/xarolawuboxor_dalirekufaj.pdf
    • http://northumberlandday.net/uploads/1/3/0/6/130621035/gujoledaninato.pdf
    • http://nicolehamilton.com.au/uploads/1/3/0/6/130621280/777834.pdf
    • http://moodlabnewlife.nl/uploads/1/3/0/6/130621075/130621075.html#destination+b2+answer

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001216.bin
66aea3d7d2517c5c95f3d20c2a5ce0da3e28d1be074be13326de579ec9db48d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1216 9572 bytes
font_01_sfnt_off00004f79.bin
57208ba00e6719ba376c373642bc1e5c8f19f6917b5d14f5d42dd5c37f68b51f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F79 19864 bytes

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