Malicious PDF — malware analysis report

Static analysis result for SHA-256 e991d930f5ea7b0d…

MALICIOUS

PDF

239.7 KB Created: 2021-04-05 05:07:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 180f0a7b4b347ed618520c73099753ae SHA-1: 7bfa78bbb7fb05f07ebd870f0ec7b36807741d3a SHA-256: e991d930f5ea7b0d6ba1f388fca26dae4684ed3c6ba0b9d9cbe6dde416526de9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs and a visual download button. The embedded URLs and the document body content, despite being partially garbled, suggest a phishing attempt related to free Roblox games and cheats. The PDF structure itself does not contain executable scripts, but the overall context points to a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5773

Heuristics 4

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gaminggenerator.org/app/431946152/free-roblox-games-to-play-now PDF link annotation
    • https://belixconstructions.com.au/images/how-to-get-free-robux-just-by-watching-videos.pdfIn PDF document text
    • http://greasley.online/images/how-to-turn-off-cheats-in-roblox.pdfIn PDF document text
    • http://arch-centr.ru/images/hack-de-free-drive-roblox-tarjetas.pdfIn PDF document text
    • http://legitame.org/images/roblox-jailbreak-hack-apk-download.pdfIn PDF document text
    • http://palogar.es/images/roblox-robux-free-codes-2021.pdfIn PDF document text
    • http://fiur-malermeister.de/images/roblox-sunset-city-hack.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-wall-hack-in-roblox-jailbreak.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-faces-on-roblox-october-2021.pdfIn PDF document text
    • https://servotecnica.com/images/how-to-hack-roblox-using-unity.pdfIn PDF document text
    • http://lillysonthelake.com/images/how-to-hack-jailbreak-roblox.pdfIn PDF document text
    • http://famoirs.co.uk/images/roblox-bee-swarm-simulator-hacks.pdfIn PDF document text
    • https://shimony.net/images/roblox-codes-rob-the-bank-hack.pdfIn PDF document text
    • http://egorplitka.ru/images/how-to-hack-an-old-roblox-account.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-hack-big-brother-roblox.pdfIn PDF document text
    • https://www.najeebqasmi.com/images/1-million-free-robux-landonrb.pdfIn PDF document text
    • http://sscclc.edu.ec/images/free-roblox-gift-cards-2021.pdfIn PDF document text
    • http://rushxpress.de/images/free-bundle-roblox.pdfIn PDF document text
    • https://www.dierenartsberghman.be/images/how-to-get-free-clothes-no-robux-of-friends.pdfIn PDF document text
    • http://homequeen.de/images/free-robux-generator-no-download.pdfIn PDF document text
    • http://kermas.eu/images/how-to-free-robux-november-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000369f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x369F4 21316 bytes
SHA-256: 3a5e5874ac897743369ce34451c1b5402aaeba1654ffb1b946faf222c864cfe0
font_01_sfnt_off0003986f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3986F 18360 bytes
SHA-256: dadc59e877278a7b43c193e7f57199058e4d8a68b72a2142afc907aca269aacb

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