Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8f32b2f2300e57…

MALICIOUS

PDF

248.1 KB Created: 2021-04-05 00:11:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 28d39ce5de09d516ccf9a8f9cecd7799 SHA-1: 24dae081b72a767499c8a20126c9de5adc576b28 SHA-256: 2e8f32b2f2300e57fa6502937f773caf67b40f83c2c49131ba5810e4fd78d188
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs and a heuristic firing for PDF_URI, indicating it is designed to direct users to external websites. The ClamAV detection as 'Pdf.Phishing.Roblox062100-9873116-0' strongly suggests a phishing or malicious intent related to the Roblox game. The document body, though heavily obfuscated, contains references to 'Free Robux 2021' and 'wkhtmltopdf', reinforcing the lure. The presence of embedded URLs and the phishing detection point towards a malicious document likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.1052

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-robux-2021-yt PDF link annotation
    • http://www.eurosan1.ba/images/how-to-hack-roblox-accounts-on-pc.pdfIn PDF document text
    • http://goosesscuba.com/images/fortnite-roblox-play-free.pdfIn PDF document text
    • http://aeroclub-kaernten.at/images/roblox-mod-apk-free-robux.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-stuff-on-roblox-on-a-phone.pdfIn PDF document text
    • https://www.u-pin-it.com/images/how-o-get-free-robux-2021.pdfIn PDF document text
    • http://serviio.org/images/free-robux-in-robolx.pdfIn PDF document text
    • http://lakeshistory.com/images/can-i-get-free-money-on-roblox-adopt-me-2021.pdfIn PDF document text
    • http://ns1.radiofacil.net/images/roblox-piano-gui-hack.pdfIn PDF document text
    • https://www.europap.cz/images/tuto-comment-hacker-des-robux.pdfIn PDF document text
    • http://shahriyarclimb.com/images/how-to-get-robux-no-hack-or-anything-free-209.pdfIn PDF document text
    • https://www.academiaanticorrupcion.org/images/roblox-hack-client-2021-download.pdfIn PDF document text
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-robux-en-francais.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/hack-infinitos-robux.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-games-that-actually-work.pdfIn PDF document text
    • https://icefuture.ru/images/going-though-walls-roblox-hack.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/roblox-robux-hack-no-verification-2021.pdfIn PDF document text
    • https://raduzhnyj.od.ua/images/roblox-robux-hack-easy-for-lg.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/roblox-jailbreak-cheat-engine-noclip.pdfIn PDF document text
    • http://www.inservis.cl/images/free-and-birds-head-roblox.pdfIn PDF document text
    • https://bapalaye.org/images/earnbux-free-robux.pdfIn PDF document text
    • https://www.robuxgenerator.cyouIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37909 24516 bytes
SHA-256: b7662569c38219d6748f24f2e3b6ba7591a1a427d4099926c74759f3416ca193
font_01_sfnt_off0003b075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B075 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off0003ba66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA66 17912 bytes
SHA-256: fe506050483a4836e5c6fe46b1d841617258178950e6f8a8abf088ce428e9241

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