Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1ba7d01d88ba7f…

MALICIOUS

PDF

16.4 KB Created: 2020-02-15 02:17:37 +00:00 Authoring application: mPDF 5.7
MD5: 90f86d57f8afff1b2dbdc74d652e7921 SHA-1: e79bd7cd37f07215c6d816725e13a6ea5aa84562 SHA-256: 4b1ba7d01d88ba7fb181fd1aa15fab1f54903e94710d6ba2607ad18efed22e8c
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to external PDF documents on the domain lwoscmobook.myhome.cx. This technique, identified by the PDF_SEO_LINK_FARM heuristic, 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, making it difficult to determine the exact payload. The primary attack pattern observed is the distribution of numerous links to external content.

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://lwoscmobook.myhome.cx/252485240524652495244/Wolfsbane-Howl-3-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/152445248524252455246/Wolfsbane-Howl-3-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/152445248524352415242/Howl-Howl-1-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/152445248524352425249/Blood-Moon-Howl-2-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/352415244524152465241/Howl-Series-Books-5-7-Bonus-Book-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/152475245524652485245/Shadow-Creatures-The-Sherwood-Wolves-3-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/352405245524352445240/Bloodsworn-The-Sherwood-Wolves-Book-4-by-Jody-Morse.pdf
    • http://lwoscmobook.myhome.cx/252455245524552425246/Midnight-Howl-Howl-and-Prowl-1-by-Kate-Steele.pdf
    • http://lwoscmobook.myhome.cx/252485248524252455249/The-Second-Inspector-Morse-Omnibus-The-Secret-Of-Annexe-3-The-Riddle-Of-Third-Mile-Last-Seen-Wearing-Inspector-Morse-7-6-2-by-Colin-Dexter.pdf
    • http://lwoscmobook.myhome.cx/652405243524152475241/Howl-And-Growl-Wolf-And-Cat-Shifter-Paranormal-Romance-Howl-And-Growl-Series-Book-1-by-Cloe-Cullen.pdf
    • http://lwoscmobook.myhome.cx/252495247524352455247/Howl-s-Moving-Castle-Howl-s-Moving-Castle-1-by-Diana-Wynne-Jones.pdf
    • http://lwoscmobook.myhome.cx/85246524652425246/Howl-s-Moving-Castle-Howl-s-Moving-Castle-1-by-Diana-Wynne-Jones.pdf
    • http://lwoscmobook.myhome.cx/75242524052485247/Wolfsbane-and-Mistletoe-by-Charlaine-Harris.pdf
    • http://lwoscmobook.myhome.cx/452405246524452445241/Wolfsbane-Nightshade-2-by-Andrea-Cremer.pdf
    • http://lwoscmobook.myhome.cx/252425240524152465244/Wolfsbane-Maurin-Kincaide-3-by-Rachel-Rawlings.pdf
    • http://lwoscmobook.myhome.cx/352405240524952495240/-To-o-by-John-Morse.pdf
    • http://lwoscmobook.myhome.cx/452495247524552475243/What-Is-Punk-by-Eric-Morse.pdf
    • http://lwoscmobook.myhome.cx/152415248524552435245/More-in-Store-by-Andrine-Morse.pdf
    • http://lwoscmobook.myhome.cx/252405240524052485243/White-Dog-Fell-from-the-Sky-by-Eleanor-Morse.pdf
    • http://lwoscmobook.myhome.cx/252465247524852455247/The-Way-of-The-Fairy-Godmother-by-Jennifer-Morse.pdf