Malicious PDF — malware analysis report

Static analysis result for SHA-256 c520b83e62eabb2f…

MALICIOUS

PDF

17.1 KB Created: 2019-05-02 05:40:51 +01:00 Authoring application: mPDF 5.7
MD5: 354381b7353a08bfec7bd04f0a85b5d4 SHA-1: c2ff9c247337341cb23cf00be2aeb1868d71b120 SHA-256: c520b83e62eabb2f8c30d458531d90d8588c2cefd2b896ef5786d54898c72bf8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/4738739730731/Living-Nightmare-Sentinel-Wars-4-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/2730736739734730/Willing-Sacrifice-Sentinel-Wars-8-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/1737733739733739/Willing-Sacrifice-Sentinel-Wars-8-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/2730737736733735/Bound-by-Vengeance-Sentinel-Wars-5-5-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/1738736739733737/On-the-Hunt-Sentinel-Wars-3-4-Nightkeepers-5-5-Gods-of-Midnight-4-5-by-Gena-Showalter.pdf
    • http://cefasfese.4pu.com/3738738731730739/Forget-Me-Not-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/4739730739732736/No-Control-Delta-Force-2-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/3731734733731736/No-Control-Delta-Force-2-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/2731733731735739/Nightmare-Ink-Living-Ink-1-by-Marcella-Burnard.pdf
    • http://cefasfese.4pu.com/6736730737733/Sentinel-Sentinel-Trilogy-1-by-Joshua-Winning.pdf
    • http://cefasfese.4pu.com/1736733735734735/Sentinel-The-Sentinel-Trilogy-1-by-Jamie-Foley.pdf
    • http://cefasfese.4pu.com/3733735733730/A-Living-Nightmare-Cirque-Du-Freak-1-by-Darren-Shan.pdf
    • http://cefasfese.4pu.com/4736733735734731/The-Red-Bridge-Wars-by-Shannon-Price.pdf
    • http://cefasfese.4pu.com/1736731738736735/The-Madman-and-the-Butcher-the-Sensational-Wars-of-Sam-Hughes-and-General-Arthur-Currie-by-Tim-Cook.pdf
    • http://cefasfese.4pu.com/3736731730730734/Living-My-Nightmare-The-Work-Of-Filmmaker-Coven-Delacruz-by-Calvin-A-L-Miller-II.pdf
    • http://cefasfese.4pu.com/2731730737732735/Living-Among-Headstones-Life-in-a-Country-Cemetery-by-Shannon-Applegate.pdf
    • http://cefasfese.4pu.com/3733735731732737/The-Hell-Of-Allegiance-My-Living-Nightmare-Of-Being-Gang-Raped-And-Held-For-Ten-Days-By-The-British-Army-by-Charmaine-Maeer.pdf
    • http://cefasfese.4pu.com/4739730734732734/Razor-s-Edge-Edge-2-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/4733733736737736/Edge-of-Betrayal-Edge-4-by-Shannon-K-Butcher.pdf
    • http://cefasfese.4pu.com/3738731733730738/Jim-Butcher-s-Dresden-Files-Ghoul-Goblin-by-Jim-Butcher.pdf
    • http://cefasfese.4pu.com/6736730737733/Sentinel-Sentinel-Trilogy-1

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