Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c65afb552d1153d…

MALICIOUS

PDF

32.3 KB Authoring application: SWFTools
MD5: e001fc59272950eb688fdd89fc5ca9e2 SHA-1: d92f70683f8375cab625e432eaba1c4577f88650 SHA-256: 6c65afb552d1153d67d4fec32c306ebe622df600700f9a7f9fd22fdaaa8c5e7b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV and ML classifiers also flagged this file as malicious, specifically identifying it as a phishing-related threat. The embedded links are the primary IOCs, suggesting a campaign to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nolaninc.net/uploads/1/3/0/7/130739362/3523801.pdf
    • http://cakesetcinc.com/uploads/1/3/0/5/130589009/a33cc3d13.pdf
    • http://kcfearfarm.net/uploads/1/3/0/8/130813731/gosivuti_bimakalupeneto_xufosavomu_tuwakepa.pdf
    • http://mta-sts.mx.brooksequestrian.com/uploads/1/3/0/3/130313002/ecd6335b0f3.pdf
    • http://pantherworkout.net/uploads/1/3/0/4/130436165/92f7527f2eb7c0.pdf
    • http://litemann.com/uploads/1/3/0/6/130621856/7a9a0e.pdf
    • http://www.fullyloadedavocadotoast.com/uploads/1/3/0/6/130622024/juxegigaruwirekek.pdf
    • http://shoptheclubhouse.com/uploads/1/3/0/7/130739595/e91998488.pdf
    • http://plataformalabs.com/uploads/1/3/0/4/130483338/1574470.pdf
    • http://edmontonaudiopost.com/uploads/1/3/0/4/130490451/4932028.pdf
    • http://webdisk.luzcarmenboutique.com/uploads/1/3/0/7/130775961/gujito.pdf
    • http://h6vmg1.bdgct.com/uploads/1/3/0/7/130739826/130739826.html#causes+of+the+great+depression+graphic+organizer+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027ce.bin
d55d3f8ebbf77207628b71071381199e0d031b31239cd8fc7479151252917c57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27CE 7620 bytes

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