Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a0d1c65a5aa85d…

MALICIOUS

PDF

42.9 KB Authoring application: Scribus
MD5: e49fb3a03163e0c882adbb5242d1d7c2 SHA-1: 1174b0d8c4996d6804fc5a53bbfac27676b3ee83 SHA-256: e2a0d1c65a5aa85db1e45e8976e4f542eaa8f8233fa9bf9f2b2f2c618d8fd1cc
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Driver san francisco cars list' and includes the same URLs found in the heuristics, suggesting a lure to click on these links.

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://satellitesessionsmusic.com.au/uploads/1/3/0/5/130590153/f366f17.pdf
    • http://preschoolhouse.com/uploads/1/3/0/4/130488172/demuruwurusevajizuge.pdf
    • http://wakosojeru.emprendedoradollyadoraim.com/uploads/2020/01/28/voziwuza-dobabugoxero.pdf
    • http://mselisewrites.com/uploads/1/3/0/5/130539599/9857026.pdf
    • http://crtropicallivethedream.com/uploads/1/3/0/4/130476172/7fe988c018a.pdf
    • http://dmgatl.com/uploads/1/3/0/2/130287243/xasijib.pdf
    • http://owenmuirmd.com/uploads/1/3/0/5/130539612/gebodirudutekid_bigibav_vujefigujawa.pdf
    • http://askachillers.com/uploads/1/3/0/3/130313294/dimowamof.pdf
    • http://ndchair.com/uploads/1/3/0/5/130551179/130551179.html#driver+san+francisco+cars+list

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e4.bin
b7ec9d778c305901808f35f579a77740c3779582b03bdd09156e490746a0cbea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4 8008 bytes
font_01_sfnt_off00006188.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6188 16068 bytes

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