Malicious PDF — malware analysis report

Static analysis result for SHA-256 55bfccf240d3ed73…

MALICIOUS

PDF

37.3 KB Authoring application: Solid Converter PDF
MD5: 6faff3e59d09da47b895dd8fafc21809 SHA-1: f74b9255ebbc5ea012e61b197564e0d5852b9baf SHA-256: 55bfccf240d3ed73d8237f0fab76b9487e939a485ea0ae8a72c76e25f04ff4c5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The document body, though heavily corrupted, contains references to fishing reports and includes the same URLs found in the heuristics, suggesting a lure to a link farm designed to distribute malicious PDFs or manipulate search engine results.

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://noonecouldhavepredicted.com/uploads/1/3/0/6/130621841/gesenezikulife.pdf
    • http://theoxfordhouseofbeauty.com/uploads/1/3/0/3/130313243/sokowawuli_bumori.pdf
    • http://tng2010.com/uploads/1/3/0/4/130489446/0184ac8.pdf
    • http://millerspowdercoating.com.au/uploads/1/3/0/5/130589208/pimuxo_jamabagibu.pdf
    • http://astoriafilmfest.com/uploads/1/3/0/4/130483417/totisusuxarukiz.pdf
    • http://amandlastenberg.com/uploads/1/3/0/4/130435641/xalofesa.pdf
    • http://28bullets.com/uploads/1/3/0/6/130639929/bomuwul.pdf
    • http://drpatty.net/uploads/1/3/0/5/130551006/130551006.html#homosassa+fishing+report+november

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001176.bin
5ba932d967903a3dd8f69caf52d0ad290898bc7e927baa10a4e3b4b3f34bbce5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1176 8452 bytes