Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f8a0f92b60f6a2…

MALICIOUS

PDF

54.4 KB Authoring application: SWFTools
MD5: d5e4eb99190f6a929dc2cb5e74941d11 SHA-1: ce36c30681d69807807f173f845d56f9468e53ca SHA-256: f1f8a0f92b60f6a23ee66df245364484b0b3f5051ab47ec1f534ee3d96037774
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a large number of external links. The ML classifier also assigned a high probability of maliciousness. The embedded URLs point to various domains, all with unknown reputation, suggesting a phishing or malware distribution campaign. No scripts were extracted from this sample.

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://slatteneyecare.com/uploads/1/3/0/5/130550796/safodegovagifesojatu.pdf
    • http://solonterrasgolf.com/uploads/1/3/0/5/130550818/runexo.pdf
    • http://visionbystin.com/uploads/1/3/0/6/130620632/sofiribezesuge.pdf
    • http://seattlebreastfeedinghikes.com/uploads/1/3/0/6/130605107/55b4c7f125de.pdf
    • http://jomowlawncare.com/uploads/1/3/0/4/130435875/79eebfd.pdf
    • http://afaparents.org/uploads/1/3/0/7/130739117/130739117.html#digestion+and+absorption+of+dietary+lipids

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c8.bin
993a41e863ec156c02c23cee3774f0b9d98c013c0f60882a39de418988c96229		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8 8680 bytes
font_01_sfnt_off000090f3.bin
c048ac4ed90d63bfae46472f65f9cf6fc0bd5e75369f2d8f28771a6d96a2731c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 3156 bytes
font_02_sfnt_off00009b60.bin
5308e402ca92896b4e961d12812fb79dfd474d6338ee20f4e4ff112a1cddd3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B60 1900 bytes

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