Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c2434c0cee1dc1…

MALICIOUS

PDF

79.4 KB Created: 2022-06-12 21:21:08 +02:00 Authoring application: yehchav (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 980affb189c4ddcce7888dc799f467b0 SHA-1: 7b422de70218bf69c66eeb18067f81bc05472de7 SHA-256: a8c2434c0cee1dc1d5896485d9facc6f869fb9826be0421813e7bf58e118adfa
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to obscure the true malicious payload. One of the primary external URIs, http://evacdir.com/inconceivable/..., is likely a download URL for a second-stage payload. The presence of a PDF_SEO_LINK_FARM heuristic firing further supports the malicious intent of distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0213

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://evacdir.com/inconceivable/ZG93bmxvYWR8V0Y4Ynpab09YeDhNVFkxTkRrNE9URTJNbng4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/khedive/?U3VuYmVsdCBWSVBSRSBBbnRpdmlydXMgUHJlbWl1bSA0LjAuMzkwNCBLZXlnZW4gW1JIXSBkb3dubG9hZCBwYwU3V=migrain.outlooks&refracts=slurring.mindsets
    • https://sharingourwealth.com/social/upload/files/2022/06/4GmB1iVsjaiIOTTGtSIn_12_e2afeb9cd9cdcfaef00f9a40ed4aa1e1_file.pdf
    • https://woodplatform.com/wp-content/uploads/2022/06/autodata_crack_francais.pdf
    • https://visiterlareunion.fr/wp-content/uploads/2022/06/prozavy.pdf
    • https://www.almawomenboutique.com/wp-content/uploads/2022/06/kiermerc.pdf
    • https://firmateated.com/2022/06/12/construction-simulator-2015-gold-edition-cheats/
    • https://corosocial.com/upload/files/2022/06/nKz4sdjbbatXry1GJIBw_12_e2afeb9cd9cdcfaef00f9a40ed4aa1e1_file.pdf
    • https://explorerea.com/?p=5049
    • https://farmaciacortesi.it/wp-content/uploads/2022/06/Alcpttestonline_HOT.pdf
    • https://renovarcar.net/wp-content/uploads/helbles.pdf
    • https://fastmarbles.com/wp-content/uploads/2022/06/Modern_Warfare_3_Unable_To_Create_Steam_Appidtxt.pdf
    • https://okinawahousingportal.com/hd-online-player-dynasty-warriors-6-pc-movie-files-do-hot/
    • https://ikuta-hs19.jp/download-transferuri-2013-fifa-08-fisierulmeu/
    • https://vizitagr.com/wp-content/uploads/2022/06/beatagy.pdf
    • https://kireeste.com/wp-content/uploads/2022/06/mikrawl.pdf
    • https://muslimprofessionalsgh.org/advert/fast-five-2011-1080p-bluray-x264-dual-audio-english-hindi-tbi-verified/
    • https://wo-finde-ich.net/wp-content/uploads/2022/06/zellan.pdf
    • https://awinkiweb.com/wp-content/uploads/2022/06/felyhar.pdf
    • http://www.sweethomeslondon.com/?p=10115
    • https://jujitsu.pl/hd-online-player-batman-v-superman-dawn-of-justice-english-top-full-movie-telugu-free-download/
    • https://natsegal.com/naan-2012-lotus-dvd-rip-1cd-tamil-movie-download-hotavi/
    • http://www.tcpdf.org
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000f02.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF02 120140 bytes