Malicious PDF — malware analysis report

Static analysis result for SHA-256 a764b1ae795d20ae…

MALICIOUS

PDF

45.9 KB Created: 2021-05-17 20:40:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1ce64240d1aac7c075b471246bd45b46 SHA-1: ce174c330c083a619cbdd239805d7a8e5e7907de SHA-256: a764b1ae795d20aec59fcb382e6fd9e9e40ede19644c8347fe629734dee4f896
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The heuristic firings indicate this is a common lure for malicious redirects. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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 https://netcdn.xyz/app/431946152/websites-to-get-free-robux-game-hack PDF link annotation
    • http://dieter-sauter.com/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/give-me-robux-now_GM431946152.pdfIn 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
stream_003_off00004a3c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3C 25796 bytes
SHA-256: f45a10bf7fb32c6592a60a0369c9695dc6a4da95d0686311d16675a2ab7e7968
font_01_sfnt_off00008644.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8644 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off0000902e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902E 18436 bytes
SHA-256: 6ab9ab31980840835fbaeca164a74f0e8188db39a6ce5c5e4face3e95ba0b523

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