Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ea8c34683cbcbe…

MALICIOUS

PDF

82.1 KB Authoring application: Inkscape
MD5: 8606b49e1ed593ae1eca4bf04602f8e5 SHA-1: faa3dd014c62072ff455855878d310f16cc22fa7 SHA-256: 14ea8c34683cbcbee7549da23dc5511dbe70ac80bf814d92ff26e394ea2fb631
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and a machine learning classifier also flagged it as malicious. No scripts were extracted from this sample, but the extensive link farm suggests a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://firewallyourwallet.com/uploads/1/3/0/5/130551143/6619043.pdf
    • http://www.old.sandiegoparanormalresearch.com/uploads/1/3/0/3/130323415/wabutub-lumid-fosunuwirofob-silavoped.pdf
    • http://1o1services.com/uploads/1/3/0/6/130621140/danafafoxuloma-xokito.pdf
    • http://urbanrips.com/uploads/1/3/0/2/130273799/f5d8ea51024e.pdf
    • http://webmail.kimstarksministries.com/uploads/1/3/0/4/130494389/8430725.pdf
    • http://riverstonegallerycustomgifts.com/uploads/1/3/0/5/130588596/suvamugirumom.pdf
    • http://deardoc.org/uploads/1/3/0/2/130289304/6814138.pdf
    • http://peekingpress.net/uploads/1/3/0/5/130589293/bd4763.pdf
    • http://americanational.us/uploads/1/3/0/6/130620974/508361.pdf
    • http://cmiresearch.org.uk/uploads/1/3/0/7/130740124/nasiramenakisisexefa.pdf
    • http://tillerenergypartners.com/uploads/1/3/0/7/130775130/4916962.pdf
    • http://www.neverreacttohate.com/uploads/1/3/0/2/130272406/130272406.html#deep+venous+thrombosis+prophylaxis+guidelines

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005270.bin
18fec071c6952338241816cb7a50c57a249d8dc7e3a34c647106800f4250c9e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5270 8092 bytes

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