Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d8a2d7f87836b6…

MALICIOUS

PDF

38.1 KB Authoring application: Smallpdf Desktop
MD5: 8b5c82f8956d4d7593df4200e7c45de3 SHA-1: 4bbc40874cf1b15f128e3a133878e1bea1b1823f SHA-256: c9d8a2d7f87836b667a6614c9f0e1d020b2014074d193fed2264ed1e2d7654d8
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO or malicious redirection. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of a visual download button further indicate a phishing or malicious download attempt. The document body contains obfuscated text and URLs, reinforcing the malicious intent.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://philanthropyexchange.net/uploads/1/3/0/3/130313422/kuruza.pdf
    • http://earlycareercoaching.com/uploads/1/3/0/5/130541465/56df5662.pdf
    • http://mrncrdbl.com/uploads/1/3/0/6/130604421/1c0766df987f9.pdf
    • http://realsolutionsrealestate.com/uploads/1/3/0/7/130776025/ribuxiko_felevamoxovev.pdf
    • http://oryganj.net/uploads/1/3/0/5/130588674/7181e.pdf
    • http://www.oaklandzendo.org/uploads/1/3/0/7/130775828/tizosaf_rofebovi_maselevuwewezed_tewanifa.pdf
    • http://surajdhakal.com/uploads/1/3/0/8/130814877/36766d1c8.pdf
    • http://yuvensdream.com/uploads/1/3/0/5/130546243/17559754.pdf
    • http://standardroofco.com/uploads/1/3/0/8/130874051/nojodekel-pekabunazizuri.pdf
    • http://hostmaster.francisfoster.co.uk/uploads/1/3/0/6/130639516/696439.pdf
    • http://entertainersaz.com/uploads/1/3/0/2/130289220/zatuwobe_rozuwotajojulut_defarazagus_rifidipapol.pdf
    • http://bambusaglobal.com/uploads/1/3/0/6/130621352/a66c7af3fb6b.pdf
    • http://trentriverdesigns.com/uploads/1/3/0/5/130590403/130590403.html#total+war+shogun+2+v1.0.0+build+3241+trainer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003cb0.bin
4e24e6d19e903ac063dbb6d28e66905775ae9318ad7b9e8b313e5952da0035d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB0 7988 bytes

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