Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c221c5a694d2cb1…

MALICIOUS

PDF

43.0 KB Authoring application: Inkscape
MD5: 800ba1d99500484758afbf499b4ccaba SHA-1: c7d3c915db512fdbcdcadb919f85a8df7bc0803f SHA-256: 2c221c5a694d2cb14aa72f3d3c1bfb1d8f6072ac1c344bc098b007d92b8ce6ef
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 external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent. The document body, though partially corrupted, contains text related to 'Bruchrechnen textaufgaben mit lösung' (fraction calculation word problems with solution), suggesting a lure to disguise the malicious link farm. The primary goal appears to be redirecting users to external sites, potentially for phishing or malware distribution.

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://procon-loe.ru/uploads/1/3/0/5/130540477/5e22116c.pdf
    • http://agentsrescue.org/uploads/1/3/0/5/130589145/7fcc8bf5.pdf
    • http://rebootventures.co.uk/uploads/1/3/0/6/130604520/rasutejikobatewukavi.pdf
    • http://nickumelectric.com/uploads/1/3/0/5/130540824/tepiledof.pdf
    • http://jammiemelgar.com/uploads/1/3/0/6/130604907/d89582db5e.pdf
    • http://nicholebertucci.com/uploads/1/3/0/7/130739756/timigeligoda_vutakeme_lowoj_forubaw.pdf
    • http://tillyshousehollysgarden.com/uploads/1/3/0/2/130289259/dowuwatikafe_vasilelawubipe_vawipawiluwal.pdf
    • http://oboeandbassooncamp.com/uploads/1/3/0/5/130550783/madon.pdf
    • http://sococreole.com/uploads/1/3/0/5/130543276/tumavabobo_dagivatebejajer_fepik.pdf
    • http://cfthomas.com/uploads/1/3/0/2/130272420/130272420.html#bruchrechnen+textaufgaben+mit+l%C3%B6sung

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012bb.bin
138ed6c4224a81a6c8a89678cf077d4d0c6abe26b4797959269e543abb1f4359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB 9736 bytes
font_01_sfnt_off00006219.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 16036 bytes

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