Malicious PDF — malware analysis report

Static analysis result for SHA-256 a31146fc3524a311…

MALICIOUS

PDF

22.0 KB Created: 2019-04-30 02:37:19 +01:00 Authoring application: mPDF 5.7
MD5: 5f7f2ffd09f9752268aca64d9fbb94ee SHA-1: b43d2e0134e8f46ebb3243b2a3c5627c912fe9c8 SHA-256: a31146fc3524a311594d5aa7540359ee192b6e05013a4b966cac7341af4635f3
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a large number of external links, suggesting a link farm or distribution mechanism. While the document body is unreadable, the presence of numerous links, many pointing to PDF files with similar naming conventions, indicates an attempt to manipulate search engine results or direct users to potentially malicious content. The primary IOC is the first URL identified in the link farm.

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://xiixmcuin.linkpc.net/8209206201200202/Building-Guderian-s-Duck----Germany-s-Response-to-the-Eastern-Front-Antitank-Crisis-1941-1945-by-Scott-Chafian.pdf
    • http://xiixmcuin.linkpc.net/8209206200209205/Building-Guderian-s-Duck-Germany-s-Response-To-The-Eastern-Front-Antitank-Crisis-1941-To-1945-by-L-Cmdr-Scott-M-Chafian.pdf
    • http://xiixmcuin.linkpc.net/1201200204208207201/The-Eastern-Front-Memoirs-of-a-Waffen-SS-Volunteer-1941-1945-by-Laeon-Degrelle.pdf
    • http://xiixmcuin.linkpc.net/9204200209206208/Panzer-Operations-The-Eastern-Front-Memoir-of-General-Raus-1941-1945-by-Erhard-Raus.pdf
    • http://xiixmcuin.linkpc.net/9208207201207205/SS-Hell-on-the-Eastern-Front-The-Waffen-SS-War-in-Russia-1941-45-by-Christopher-Ailsby.pdf
    • http://xiixmcuin.linkpc.net/8209205207205200/Guderian-Panzer-s-on-War-1939-1941-by-German-Military-Books-2000--2015.pdf
    • http://xiixmcuin.linkpc.net/8209206200202204/Operation-Barbarossa-Panzergruppe-Guderian-in-Russia-22-June-1941-by-Atenas-Editores-Asociados.pdf
    • http://xiixmcuin.linkpc.net/8209205206202201/Heinz-Guderian-The-Life-and-Legacy-of-Nazi-Germany-s-Famous-Panzer-Commander-by-Charles-River-Editors.pdf
    • http://xiixmcuin.linkpc.net/8201207205205/After-the-Music-Stopped-The-Financial-Crisis-the-Response-and-the-Work-Ahead-by-Alan-S-Blinder.pdf
    • http://xiixmcuin.linkpc.net/1201204202209205207/Black-Cross-Red-Star-Air-War-Over-the-Eastern-Front-Vol-3-Everything-for-Stalingrad-by-Christer-Bergstr-m.pdf
    • http://xiixmcuin.linkpc.net/1204200205204207/The-War-An-Intimate-History-1941-1945-by-Geoffrey-C-Ward.pdf
    • http://xiixmcuin.linkpc.net/5206205202202208/The-Pacific-War-1941-1945-by-John-Edmond-Costello.pdf
    • http://xiixmcuin.linkpc.net/8207200201207207/The-Pacific-Campaign-The-U-S--Japanese-Naval-War-1941-1945-by-Dan-van-der-Vat.pdf
    • http://xiixmcuin.linkpc.net/4205200204209200/800-Days-on-the-Eastern-Front-A-Russian-Soldier-Remembers-World-War-II-by-Nikolai-Litvin.pdf
    • http://xiixmcuin.linkpc.net/1200201206204209204/The-Kaminski-Brigade-A-History-1941-1945-by-Antonio-J-Mu-oz.pdf
    • http://xiixmcuin.linkpc.net/3208202208203206/Sniper-on-the-Eastern-Front-The-Memoirs-of-Sepp-Allerberger-Knights-Cross-by-Albrecht-Wacker.pdf
    • http://xiixmcuin.linkpc.net/2203206204209/Power-and-Culture-The-Japanese-American-War-1941-1945-by-Akira-Iriye.pdf
    • http://xiixmcuin.linkpc.net/2201209206202/The-Abandonment-of-the-Jews-America-and-the-Holocaust-1941-1945-by-David-S-Wyman.pdf
    • http://xiixmcuin.linkpc.net/1201203203206204205/Germany-1945-From-War-to-Peace-by-Richard-Bessel.pdf
    • http://xiixmcuin.linkpc.net/2202201207203201/Windows-on-the-War-Soviet-TASS-Posters-at-Home-and-Abroad-1941-1945-by-Peter-Zegers.pdf
    • http://xiixmcuin.linkpc.net/1201200204208207201/The-Eastern-Front-Memoirs-of-a-Waffen-SS-Vo