Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98f8dca7c8c9060…

MALICIOUS

PDF

43.9 KB Authoring application: GIMP
MD5: acef3768f230b34552c57bf286657b90 SHA-1: 86dc5bc9c62eb6b88425e7cab72fa29cb9bdf75f SHA-256: c98f8dca7c8c9060cc1e7ada75ee293c708174422f6cdb4c206829f61c0a0721
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains, consistent with a link farm or SEO manipulation tactic. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a template for an incident report, which is likely a lure.

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://notyourfathersadvisor.com/uploads/1/3/0/5/130539763/kivaze_mefejikibiromok_dozumixujisani.pdf
    • http://agnesmusic.net/uploads/1/3/0/4/130436288/6892898.pdf
    • http://prelude-to-action.com/uploads/1/3/0/6/130604477/3940740.pdf
    • http://www.mindbodysoulutions.org/uploads/1/3/0/5/130551517/a884446a93.pdf
    • http://blacksign.net/uploads/1/3/0/6/130603776/1510231.pdf
    • http://12250parkway.com/uploads/1/3/0/6/130639655/8198304.pdf
    • http://constructingvisions.com/uploads/1/3/0/7/130775025/35d6838174.pdf
    • http://researcheducateftl.ca/uploads/1/3/0/6/130639410/a75e6bc8591dc.pdf
    • http://theradicallygood.com/uploads/1/3/0/8/130874113/8035814.pdf
    • http://www.upfrontadds.com/uploads/1/3/0/7/130776649/mimato.pdf
    • http://ciarawiegers.com/uploads/1/3/0/6/130640027/samafututivezen.pdf
    • http://www.brandimillerhobbs.com/uploads/1/3/0/5/130545199/270427.pdf
    • http://victoriawhaley.com/uploads/1/3/0/9/130969357/pepisunokovuki-sojizozex-nebifam.pdf
    • http://www.jedparkerdigitalartifact.com/uploads/1/3/0/4/130476605/limefipukutonav_rasewit_soliw.pdf
    • http://mytmch.com/uploads/1/3/0/5/130588594/db4db2cd.pdf
    • http://hostmaster.artprize.co.uk/uploads/1/3/0/5/130539238/01300e.pdf
    • http://naturesowncharcoal.com/uploads/1/3/0/3/130313529/bomepobonuwojo-lawaxeg.pdf
    • http://ivyadvance.net/uploads/1/3/0/7/130739463/1591819.pdf
    • http://vps18.pleasingfood.com/uploads/1/3/0/9/130969653/130969653.html#accident+incident+investigation+report+template
    • http://12250parkway.com/uploads/1/3/0/6/130639655/8198304

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034d2.bin
adc67f74692488f7c948dd1be5f7e56f532c78f0f44297e511eed9e2cb4bfadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34D2 16220 bytes
font_01_sfnt_off00004cd3.bin
1228dda7106cdfe17b12f35df7deee7dfd19f15e026e88a70a1b15c4e8d17e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD3 8404 bytes

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