Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be759bb4e9109ae…

MALICIOUS

PDF

45.3 KB Authoring application: Mobipocket Creator
MD5: f09ac76846057402be0368ae2e4a4835 SHA-1: 165fe2f8e3fd2cd616b37efaff44a3998e834f1c SHA-256: 6be759bb4e9109aedf8b732e0e6d35ab01f3f769af0af8b173772030d6ffe977
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to host malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and an ML classifier also flagged it as malicious. The document body, though partially corrupted, contains references to "Neutrogena hydro boost sheet mask review" and lists numerous URLs, reinforcing the link farm heuristic.

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://mywhiteengineering.com/uploads/1/3/0/3/130379287/2342824.pdf
    • http://bigmindbigsoul.com/uploads/1/3/0/5/130539093/nekorinotep_kubimudud_jemikode_lizodofe.pdf
    • http://vixadin.pay-pass.info/uploads/2020/01/28/lironax_votateb_futujuxuzip_tupir.pdf
    • http://siberianpurrbabies.com/uploads/1/3/0/6/130640029/topaxeti-napusuwip.pdf
    • http://fastpicker5.com/uploads/1/3/0/4/130476192/1768043.pdf
    • http://drakealexanderwalling.com/uploads/1/3/0/5/130590410/vogonuxorujagi-wivagizixodobul-barolirena.pdf
    • http://nashvillebowling.org/uploads/1/3/0/6/130640062/5083192.pdf
    • http://tabathamccormickprice.com/uploads/1/3/0/3/130323709/7751162.pdf
    • http://remaa.ca/uploads/1/3/0/5/130540814/3300369.pdf
    • http://advance-it.net/uploads/1/3/0/4/130489446/130489446.html#neutrogena+hydro+boost+sheet+mask+review
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012c9.bin
acffe62590503f3989bf5249dd7ba74dbfe1b380c3157bb50ad576be86b47750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9 9244 bytes
font_01_sfnt_off00006a6d.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6D 16140 bytes

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