Malicious PDF — malware analysis report

Static analysis result for SHA-256 40232c82e8f55ccc…

MALICIOUS

PDF

145.1 KB Created: 2022-07-01 04:35:38 +02:00 Authoring application: leazaka (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 8323a596b0965b2c667d7d2d84d8f210 SHA-1: f806a10c75f3fc2df3ffb117639c89415e15b375 SHA-256: 40232c82e8f55cccf78ec9c6bce053ad6448c3c8cb4b2aa2893265678af855b8
64 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The PDF file contains a large number of external links, many of which appear to be related to software downloads, specifically Adobe Photoshop. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm or a mechanism to distribute malicious content. The primary IOC is the first external URI found, which contains a base64 encoded string that likely leads to a payload download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0077

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://findthisall.com/wyoming/ZG93bmxvYWR8MldLWm04MGZId3hOalUyTmpRd09ERTNmSHd5TlRnM2ZId29UU2tnU0dWeWIydDFJRnRHWVhOMElFZEZUbDA/braver.MzIgYml0IHBob3Rvc2hvcCBjczYgZnJlZSBkb3dubG9hZAMzI./roomful?diametrically=mauling
    • https://asuperlist.com/wp-content/uploads/2022/07/quytkym.pdf
    • http://www.giffa.ru/businesssmall-business/download-adobe-photoshop-cs4-full-version/
    • https://chronicpadres.com/adobe-photoshop-cc-2020/
    • https://bestpornweb.site/wp-content/uploads/2022/07/geordelc.pdf
    • https://tgmcn.com/free-creative-3d-models-photoshop/
    • https://apts.org/sites/apts.org/files/webform/real-paint-fx-photoshop-free-download.pdf
    • https://kalapor.com/adobe-photoshop-cs5-license-key-free-download/
    • https://www.careerfirst.lk/sites/default/files/webform/cv/ivanosb166.pdf
    • http://findmallorca.com/wp-content/uploads/2022/07/Adobe_Photoshop_Action.pdf
    • https://inobee.com/upload/files/2022/07/Bqt2TpmE8St5moqIJYFS_01_ff054c5cd9c274237d3f17f385ab73bc_file.pdf
    • https://www.hhlacademy.com/advert/how-to-download-fonts-free/
    • https://coachfactor.it/photoshop-cc-2021-serial-key-download/
    • https://tranddrive.com/wp-content/uploads/2022/07/melamfr.pdf
    • https://www.vakantiehuiswinkel.nl/download-adobe-photoshop-20-0-for-free/
    • https://knoxvilledirtdigest.com/wp-content/uploads/2022/06/Free_White_Backgrounds.pdf
    • https://www.lmbchealth.com/advert/download-older-versions-of-photoshop-free/
    • https://fullrangemfb.com/download-adobe-photoshop-cc-for-pc-windows-8-10/
    • https://www.tamtam.boutique/2022/07/01/installer-profile-files-for-photoshop-cs4-64-bit/
    • https://storage.googleapis.com/paloodles/upload/files/2022/07/dSTI5fdMujhMDoubsgYw_01_ff054c5cd9c274237d3f17f385ab73bc_file.pdf
    • https://angry-mob.com/wp-content/uploads/2022/06/Instal_Adobe_Photoshop_Cs6_gratis_di_Windows_10.pdf
    • https://storage.googleapis.com/paloodles/upload/files/2022/07/dSTI5fdMujhMDoubsgYw_01_ff054c5cd9c274237d3f17f385a
    • 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_off000029f5.bin
a217f12862e0ff75203bdd4136ca0d68471050be46bb09aed5306898926ffdd4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29F5 120140 bytes