Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0d58cdf6472266…

MALICIOUS

PDF

34.9 KB Authoring application: Adobe PDF Library 9.0
MD5: e4b90ccaee12a1697b86223cfb2ac86c SHA-1: bac7d6af3959acde389c237453b8441f24b626f6 SHA-256: 3f0d58cdf64722665ff78a55fa1787c1139db8511b4546abf924bece784306f9
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports its malicious nature. No scripts were extracted from this sample, and the document body content is heavily obfuscated and truncated, preventing a more detailed analysis of its specific intent beyond link distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://southtynesideagainstbullying.co.uk/uploads/1/3/0/4/130478123/592095.pdf
    • http://alexraco.org/uploads/1/3/0/2/130287221/7771012.pdf
    • http://shelbymaeedwards.com/uploads/1/3/0/5/130539842/lamulefunun.pdf
    • http://detroitfitclub.com/uploads/1/3/0/8/130814349/xilejafezunifolaf.pdf
    • http://moonlilee.com/uploads/1/3/0/8/130874156/tukabezi.pdf
    • http://mk-acupuncture.com/uploads/1/3/0/2/130272102/mutejozazota-togaxusazipor-gibanuderiju-bupexokopu.pdf
    • http://aprginc.com/uploads/1/3/0/7/130739261/5a3ef6a9.pdf
    • http://blazzt.com/uploads/1/3/0/5/130590555/tapijukip.pdf
    • http://qualitynonsense.net/uploads/1/3/0/6/130605167/9759571.pdf
    • http://amyrasplicka.com/uploads/1/3/0/6/130604955/9cea96af7.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/5/130551206/130551206.html#active+passive+rules+present+perfect

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000025b9.bin
908225b63e1717ce4d9443c39e5e0249165423a6f1725031e285b2c0c3b49b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25B9 2148 bytes
font_01_sfnt_off0000323e.bin
55d6fdfd2bde671452f20d84a4054e882713a4bf5cee14711268618a9975546b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x323E 7704 bytes

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