Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8d5d9989a0893a…

MALICIOUS

PDF

37.6 KB Authoring application: Soda PDF
MD5: 18c9f53c4fb519514da7d831a81863e1 SHA-1: 347292c9b3d1eb6e5c534d8e8b8eded716751298 SHA-256: 9b8d5d9989a0893a57f7ab4c83344ac1f12d7e04db6b301400e0f01e5c8d643e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

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://amorahome.com/uploads/1/3/0/5/130589299/jowinewexalokirasi.pdf
    • http://diamondmarvel.com/uploads/1/3/0/7/130739727/53502.pdf
    • http://powerofforgiveness.net/uploads/1/3/0/7/130774977/8323678.pdf
    • http://smpcreditrepair.org/uploads/1/3/0/7/130739200/9661586.pdf
    • http://purposedplatform.net/uploads/1/3/0/5/130590508/1301113.pdf
    • http://mister5foot18.com/uploads/1/3/0/3/130379295/9724305.pdf
    • http://helenshanks.org/uploads/1/3/0/5/130551704/3981503.pdf
    • http://karlmart.in/uploads/1/3/0/7/130740556/lagosevukarani.pdf
    • http://globalproportions.com/uploads/1/3/0/7/130739579/sunulafipise.pdf
    • http://pogform.com/uploads/1/3/0/7/130776114/a77aaacd732.pdf
    • http://hersheypetfood.com/uploads/1/3/0/3/130313198/d3baaf592c397.pdf
    • http://paversoverconcrete.com/uploads/1/3/0/7/130775205/wigodiriroxij-jenitotu.pdf
    • http://thesoulexperiment.com/uploads/1/3/0/2/130272296/penaguzitex.pdf
    • http://networkmarketingsuccessformula.com/uploads/1/3/0/5/130539728/nitanob_zotekavul_razuxugokimi.pdf
    • http://scienceofbeer.com/uploads/1/3/0/6/130639034/af7d76b.pdf
    • http://tjmarketing.club/uploads/1/3/0/5/130588417/697158.pdf
    • http://stanfordinnanaheim.devsite-1.com/uploads/1/3/0/6/130621098/130621098.html#similarities+between+deontology+and+teleology
    • http://globalproportions.com/uploads/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002adb.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADB 2616 bytes
font_01_sfnt_off0000368b.bin
fec07dbc6fb3ceec68be1b8cb53b7921e2b9f60319e93b581ccaec250a24a642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x368B 8140 bytes

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