Malicious PDF — malware analysis report

Static analysis result for SHA-256 195049da3add1fa8…

MALICIOUS

PDF

17.6 KB Created: 2019-06-09 11:48:58 +01:00 Authoring application: mPDF 5.7
MD5: 16d10852fa65a4676c73ab7ddd1e867f SHA-1: 9c0a29cb66a7ded51dcdc451740321212b0a99db SHA-256: 195049da3add1fa85cf9a25bf749b9cb80e6d9f99cd4777fd18f1f5f44f713ef
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm or SEO manipulation tactic. While the ML classifier flagged it as malicious, the specific intent beyond link farming is unclear as no scripts were extracted. The URLs themselves appear to be benign, but the sheer volume and structure are suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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/1730739732737735734/Special-Edition-Der-M-rderclub-pr-sentiert-3-Krimis-in-einem-Band-by-Helke-B-ttger.pdf
    • http://cefasfese.4pu.com/1730735737736738737/Privatdetektiv-Tony-Cantrell-Sammelband-7---F-nf-Krimis-in-einem-Band-by-A-F-Morland.pdf
    • http://cefasfese.4pu.com/1730735737735737732/Privatdetektiv-Tony-Cantrell-Sammelband-1---F-nf-Krimis-in-einem-Band-by-Earl-Warren.pdf
    • http://cefasfese.4pu.com/1731735738732735736/Die-Frau-Im-Rollstuhl-Shooting-Stars-2-Nick-Sharman-Krimis-In-Einem-Band-by-Mark-Timlin.pdf
    • http://cefasfese.4pu.com/8738739734731738/Ugly---Pretty---Special-Band-3-Special---Zeig-dein-wahres-Gesicht-by-Scott-Westerfeld.pdf
    • http://cefasfese.4pu.com/1731731730730730731/RHEINFEUER-Band-3-der-D-ssel-Krimis-by-J-rg-Marenski.pdf
    • http://cefasfese.4pu.com/1731731730731737733/Rheinschnee-Band-2-der-D-ssel-Krimis-by-J-rg-Marenski.pdf
    • http://cefasfese.4pu.com/5739731730738730/Gesammelte-Werke-in-einem-Band-by-Christian-Morgenstern.pdf
    • http://cefasfese.4pu.com/8737739732730734/Die-Wanderapothekerin-Alle-Teile-des-Serials-in-einem-Band-by-Iny-Lorentz.pdf
    • http://cefasfese.4pu.com/8737737736739737/Abarat-Drei-Romane-in-einem-Band-by-Clive-Barker.pdf
    • http://cefasfese.4pu.com/1730730733738736735/Die-Geheimnisse-von-Udolpho---Vollst-ndige-Ausgabe-in-einem-Band-by-Ann-Radcliffe.pdf
    • http://cefasfese.4pu.com/1731736736730730734/Die-fliegenden-St-dte-Vier-Romane-in-einem-Band-by-James-Blish.pdf
    • http://cefasfese.4pu.com/6735738735731739/Mein-Kampf-zwei-B-nde-in-einem-Band-by-Adolf-Hitler.pdf
    • http://cefasfese.4pu.com/5733735735733/Die-W-chter-Trilogie-Drei-Romane-in-einem-Band-by-Sergei-Lukyanenko.pdf
    • http://cefasfese.4pu.com/1730730733739732736/Die-Schlangenkrieg-Saga-7-8zwei-Folgen-In-Einem-Band-by-Raymond-E-Feist.pdf
    • http://cefasfese.4pu.com/1731736736730734736/Feuerkind-Cujo-Zwei-Romane-In-Einem-Band-by-Stephen-King.pdf
    • http://cefasfese.4pu.com/1731737737733733734/Nichts-Zu-Verlieren-A-Wie-Alibi-Zwei-Romane-In-Einem-Band-by-Sue-Grafton.pdf
    • http://cefasfese.4pu.com/1731732732733735736/Gro-band-Adel-verpflichtet-3-Romane-in-einem-Band-by-Florence-von-Steinberg.pdf
    • http://cefasfese.4pu.com/1730730733737737730/Vincent-van-Gogh-S-mtliche-Gem-lde-in-einem-Band-by-Ingo-F-Walther.pdf
    • http://cefasfese.4pu.com/9733732735735739/Ach-so-sch-n-ist-Panama---alle-Tiger-und-B-r-Geschichten-in-einem-Band-by-Janosch.pdf