Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47f5e61b2b95350…

MALICIOUS

PDF

40.8 KB Authoring application: OpenOffice Draw
MD5: 38daca71b978998da53013e55a66f7c8 SHA-1: 33263d92735309ab455720fbb76cdf23f0e1ad43 SHA-256: b47f5e61b2b9535065030b33fbea7e6559b49d213f7ff2f13ec44e304e1529d0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF_SEO_LINK_FARM heuristic identified a large number of embedded external PDF links, with the primary domain being prettygoodfab.com. This suggests the document is designed to redirect users to potentially malicious content or for SEO manipulation purposes. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://prettygoodfab.com/uploads/1/3/0/2/130289692/5308963.pdf
    • http://nineviewer.com/uploads/1/3/0/3/130324248/5832573.pdf
    • http://session9photography.com/uploads/1/3/0/7/130739789/siwejalotes.pdf
    • http://sajelkesha.com/uploads/1/3/0/2/130271102/xanebikuka_pumitawedif_nuwikusowob_lokim.pdf
    • http://www.churchofchristgrapevine.org/uploads/1/3/0/6/130640092/8415194.pdf
    • http://hostmaster.angharadmorgansoprano.co.uk/uploads/1/3/0/4/130483396/lusufupuvijuj.pdf
    • http://www.coloniallifealaska.org/uploads/1/3/0/7/130776385/kozina-wamofizodura-sodituwonorusoz.pdf
    • http://www.embraciurebeauty.com/uploads/1/3/0/5/130539448/15b970e6c.pdf
    • http://mergeperfect.com/uploads/1/3/0/7/130738893/topikutuvutaturipibu.pdf
    • http://newsellco.com/uploads/1/3/0/5/130588772/3811177.pdf
    • http://wendyscuriosities.com/uploads/1/3/0/5/130551198/siwowozovax.pdf
    • http://theexamplesite.com/uploads/1/3/0/7/130776200/judutoba-dotivaledenese.pdf
    • http://naturalpipes.com/uploads/1/3/0/4/130483858/xakifovege.pdf
    • http://peacelovemonkey.com/uploads/1/3/0/5/130542736/d34cf1b9c97a.pdf
    • http://firstrepublicbankcareers.com/uploads/1/3/0/4/130489367/4313470.pdf
    • http://dev.hisstoryproductions.com/uploads/1/3/0/5/130588807/wiwima-zirix-kuzuxozobo-tamed.pdf
    • http://bi5q2l.salon225.com/uploads/1/3/0/4/130436089/130436089.html#production+of+human+growth+hormone+by+recombinant+dna+technology+slideshare

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004302.bin
7ccaf8d93b327be0b42ba7bb7077f7ef937b29e277475a46f8b8efa8b6ca69d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4302 8180 bytes

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