Malicious PDF — malware analysis report

Static analysis result for SHA-256 28c826f62c191ed2…

MALICIOUS

PDF

42.8 KB Authoring application: Solid Converter PDF
MD5: 90c40ee9bb6456add698dd79ea11dd25 SHA-1: cd17cb78132a305ca89f2d2ecb1c63af34c14db8 SHA-256: 28c826f62c191ed2fee3008f089660efdf0008d709d91d8f22ac9fef16bc676e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains an embedded JavaScript stream and a large number of external PDF links, indicating a phishing or malware distribution attempt. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this. The embedded JavaScript likely facilitates the redirection to these external links, which are structured to appear as search engine optimized content.

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
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://kerstetter5k.com/uploads/1/3/0/4/130436007/ac307715e10796.pdf
    • http://555consulting.com/uploads/1/3/0/4/130476075/197578.pdf
    • http://aspenleafproductions.com/uploads/1/3/0/2/130272488/xeweg.pdf
    • http://quantum-solution.com/uploads/1/3/0/5/130543035/47fc6870682e7.pdf
    • http://elizabethjin.com/uploads/1/3/0/6/130604079/30e60ce.pdf
    • http://soloporque.org/uploads/1/3/0/7/130776542/batosejo.pdf
    • http://lifecosmetics.shop/uploads/1/3/0/5/130550969/nexowonor_genizu_wobelipomi_fobavukatapagef.pdf
    • http://nubianstriders.com/uploads/1/3/0/4/130483489/5926397.pdf
    • http://brossfamily.org/uploads/1/3/0/2/130272506/6312372.pdf
    • http://acmbuenosaires.org/uploads/1/3/0/6/130605516/5893a9d4dd636.pdf
    • http://2g625.slpny.com/uploads/1/3/0/6/130622033/130622033.html#november+10+current+affairs+affairscloud

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050cd.bin
054219b45cdd697503f6a518a1190c22c4b92466065d3478b4d611f6bf7d9bfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50CD 8260 bytes

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