Malicious PDF — malware analysis report

Static analysis result for SHA-256 caf8fa787cdbf261…

MALICIOUS

PDF

42.0 KB Authoring application: Solid Converter PDF
MD5: 6cc4d4f90883f242926e7a0a71992c98 SHA-1: 28a17dcd6edd56299e0cf2145e028b127dca7418 SHA-256: caf8fa787cdbf2618cad90011fc89e8abee993b2c70f86f495b66fe566660068
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or a phishing lure designed to redirect users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing classification. No scripts were extracted from this sample.

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://david-arnebeck-news.com/uploads/1/3/0/2/130271161/xufepamuvunofidej.pdf
    • http://dmusdinnovation.org/uploads/1/3/0/5/130588225/9498148.pdf
    • http://supershopes.icu/uploads/2020/01/29/9329438.pdf
    • http://mitgliederbereich.bauberater-kdr.de/uploads/1/3/0/3/130313035/jikigolikox-rutigixeji-siguludokoxu.pdf
    • http://psp-masterok.ru/uploads/2020/01/27/3886249.pdf
    • http://ashtonharvey.com/uploads/1/3/0/6/130620845/jegugavapiwog.pdf
    • http://nashvillemobilepetgrooming.com/uploads/1/3/0/4/130483773/4893186.pdf
    • http://grandkuhni.ru/uploads/2020/01/27/18c05.pdf
    • http://padmasitaa.online/uploads/1/3/0/5/130542853/60ec5d180f0.pdf
    • http://unioresidences.com/uploads/1/3/0/5/130539437/09c132796c0.pdf
    • http://newstylemarket.com/uploads/1/3/0/4/130483728/130483728.html#bibby+line+group+annual+report+2016

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012be.bin
022cc75f1fa0844c0eb42fd67e9ddca204d73f8980e20b6545d16219670c0d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE 8900 bytes
font_01_sfnt_off00005dab.bin
c9655644a945a2bc46672e4d4588f8b8f0381e8adfc868cce1c18b57f13076a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAB 9744 bytes

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