Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fce62905ac4134…

MALICIOUS

PDF

112.2 KB Authoring application: PDFedit
MD5: b35d22204ea8289a93a2b6a47d1488ac SHA-1: 959ff7e4860e56043eba294537e2359f9ced7186 SHA-256: 30fce62905ac41340eeb748492e5baf3f0a290a2338f906a937a06e22b971c9e
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier indicated a high probability of maliciousness. The critical heuristic PDF_SEO_LINK_FARM indicates the presence of a mass external PDF link farm, with the primary URL being http://richardgeraffo.com/uploads/1/3/0/6/130639745/dodeze-zuraf.pdf. This suggests the document's primary purpose is to lure users to a network of linked malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://richardgeraffo.com/uploads/1/3/0/6/130639745/dodeze-zuraf.pdf
    • http://scwaterfrontworks.com/uploads/1/3/0/2/130274322/06a2e8d922.pdf
    • http://newdawnresidential.com/uploads/1/3/0/7/130738943/97674.pdf
    • http://myautoaccidenthelp.com/uploads/1/3/0/6/130639949/1075273.pdf
    • http://hello-baby-toys.com/uploads/1/3/0/5/130551904/130551904.html#introduction+to+modern+climate+chang

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115c.bin
124b1c3dedb192f449b4bfa80d8119b39595fa2ab3d8668358469594668e073b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115C 10024 bytes
font_01_sfnt_off0000e69f.bin
e2884cc256110f3ba37700756f9fd2e98e5ee5d0d04ac2ec47e355237f200f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 16208 bytes

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