Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a73fccee3249ead…

MALICIOUS

PDF

17.3 KB Created: 2019-05-02 07:49:08 +01:00 Authoring application: mPDF 5.7
MD5: 6649b865b217328da2203853dfc1bfc0 SHA-1: 3b4774bd55cfb6e6a84d3d6059d809b31712c1d0 SHA-256: 8a73fccee3249ead40d648f5ef3e221eb77f5be807f5e6bc03ed70346dda1953
60 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external PDF files, hosted on the domain 'cefasfese.4pu.com'. This technique is often used to distribute malicious content or to engage in SEO poisoning to drive traffic to malicious sites. No scripts were extracted, and the document body was heavily obfuscated, but the heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to redirect users. The primary IOC is the domain hosting these links.

Heuristics 2

  • 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.
  • 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://cefasfese.4pu.com/8735736734734/Master-of-Swords-Mageverse-4-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/8731731734732/Master-of-the-Night-Mageverse-1-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/1734732736738739/Knight-of-Swords-by-Ian-Breckon.pdf
    • http://cefasfese.4pu.com/4737739739733730/Cards-of-Love-Seven-of-Swords-by-J-J-Knight.pdf
    • http://cefasfese.4pu.com/4731736735739735/The-Knight-of-the-Swords-Corum-1-by-Michael-Moorcock.pdf
    • http://cefasfese.4pu.com/2736733735735/The-Knight-and-Knave-of-Swords-Fafhrd-and-the-Gray-Mouser-7-by-Fritz-Leiber.pdf
    • http://cefasfese.4pu.com/3739733738732736/Lineage-Master-of-the-Lines-1-by-Angela-Fiddler.pdf
    • http://cefasfese.4pu.com/4739735737733731/Hard-Candy-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/3730730734738737/Captive-Dreams-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/1738738738731739/Hard-Candy-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/3730730735731734/The-Vampire-s-Christmas-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/2731738738738731/Secrets-Volumes-3-and-4-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/1739733735738739/Dark-Knight-III-The-Master-Race-6-by-Frank-Miller.pdf
    • http://cefasfese.4pu.com/5736734737736/The-Third-Book-of-Swords-Books-of-Swords-3-by-Fred-Saberhagen.pdf
    • http://cefasfese.4pu.com/1738731738733732/Beyond-the-Dark-Includes-Tale-of-the-Demon-World-5-Breeds-10-5-Wolf-Breeds-5-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/1735737738739734/The-Third-Book-of-Lost-Swords-Stonecutter-s-Story-Lost-Swords-3-by-Fred-Saberhagen.pdf
    • http://cefasfese.4pu.com/4738732734735738/The-Second-Book-of-Lost-Swords-Sightblinder-s-Story-Lost-Swords-2-by-Fred-Saberhagen.pdf
    • http://cefasfese.4pu.com/3733731734730731/Master-The-Sexuality-Politics-Life-and-Philosophy-of-a-Master-by-Master-R.pdf
    • http://cefasfese.4pu.com/1738731735735737/Jane-s-Warlord-Warlord-1-by-Angela-Knight.pdf
    • http://cefasfese.4pu.com/1732731731735/Bite-Anita-Blake-Vampire-Hunter-8-5-Sookie-Stackhouse-5-1-Undead-2-5-Mageverse-1-5-by-Laurell-K-Hamilton.pdf

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