Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ba30f477bec68e…

MALICIOUS

PDF

125.5 KB Created: 2022-06-06 17:43:05 +02:00 Authoring application: theyell (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: a7e57285e1ba20acde44c22d7aba4ce0 SHA-1: 2cd46e3ff0110a882550d63b57aae596c28abcbd SHA-256: c3ba30f477bec68e9b2da9149eb66f1cb27103e49d1e8fecd3407dd6b3ffbb7f
64 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used to distribute malware or redirect users to malicious websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content. One of the extracted URLs, http://evacdir.com/hollsworth.WWFob28gRnVuQ2hhdAWWF/ZG93bmxvYWR8VnU4TW5waU1IeDhNVFkxTkRVeU1qRXhNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/amosite.puebla/tradecraft.rosinidin, appears to be a direct download link for a payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0011

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/hollsworth.WWFob28gRnVuQ2hhdAWWF/ZG93bmxvYWR8VnU4TW5waU1IeDhNVFkxTkRVeU1qRXhNSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/amosite.puebla/tradecraft.rosinidin
    • https://naamea.org/upload/files/2022/06/lvO3YBmHveNkstbhBVdl_06_fe2fa882cdc8d81d9a6686cd8095b409_file.pdf
    • https://www.pteridoportal.org/portal/checklists/checklist.php?clid=7146
    • https://oleciya.com/wp-content/uploads/2022/06/florphi.pdf
    • https://staging.sonicscoop.com/advert/polskie-radio-chicago-wnvr1030am-crack-2022/
    • https://goodsforyoutoday.com/wp-content/uploads/2022/06/raigmar.pdf
    • https://popeye.com/wp-content/uploads/2022/06/Riccicedricdesign_Action_Effects.pdf
    • http://raga-e-store.com/kerio-firewall-backup4all-plugin-crack-win-mac/
    • https://libres.nomasmentiras.uy/upload/files/2022/06/AVH5Ibk4PAPtHMLb44Hy_06_fe2fa882cdc8d81d9a6686cd8095b409_file.pdf
    • http://www.wellbeingactivity.com/2022/06/06/lazar-todo-portable-free/
    • https://www.lichenportal.org/cnalh/checklists/checklist.php?clid=12189
    • https://libres.nomasmentiras.uy/upload/files/2022/06/AVH5Ibk4PAPtHMLb44Hy_06_fe2fa882cdc8d81d9a6686cd8095b409_
    • 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_004_off000022fe.bin
b658918c6139a385c8a45ddce8be7a34b9813dbdf6ff27327002f122ca6faa11		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x22FE 120192 bytes

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