Malicious PDF — malware analysis report

Static analysis result for SHA-256 766f6a9e4aaaf3e7…

MALICIOUS

PDF

35.0 KB Authoring application: Solid Converter PDF
MD5: 37506de76eaa183d77aea7a070c9ca69 SHA-1: bfe1e705c448932fbc06248d2687af97623bcaa5 SHA-256: 766f6a9e4aaaf3e766b0ac01a239cc31ab2c1acfe1fb82cfe60c5f2192fc3e1e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm, often used for SEO spam or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection.

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://trailofhumanity.com/uploads/1/3/0/7/130776619/c55dcb8b0c6601.pdf
    • http://studentessayproofreading.com/uploads/1/3/0/7/130776269/96b2f35.pdf
    • http://honleysamba.com/uploads/1/3/0/6/130604520/dadan_voret_jikuk_ratilir.pdf
    • http://insightosteopathicmedicine.net/uploads/1/3/0/6/130639954/9ebe7c304ac5c80.pdf
    • http://www.ravenwilder.com/uploads/1/3/0/6/130604658/bidiwejadetibef.pdf
    • http://northwesternbreastsurgeons.com/uploads/1/3/0/6/130604860/08ec3923.pdf
    • http://neulip.net/uploads/1/3/0/7/130775683/wuwuvitaro-bujajaf-fukuku.pdf
    • http://mytranstrainer.com/uploads/1/3/0/8/130814992/doxalapivamalo.pdf
    • http://central24h.com/uploads/1/3/0/7/130776449/346323.pdf
    • http://adogsworld.be/uploads/1/3/0/3/130323216/606377.pdf
    • http://zerocommissionfee.com/uploads/1/3/0/8/130814232/labopegararafiwiwi.pdf
    • http://drivebergeron.com/uploads/1/3/0/5/130588468/a676c.pdf
    • http://a1545636xstreamtravel.xsideas.com/uploads/1/3/0/4/130436181/130436181.html#unix+vi+commands+quit+without+saving

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ff0.bin
0682aa17a3fe5e0582e9330c0c64ebbc013aa84339b7ffedb6ab5649a12da190		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF0 8288 bytes

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