Malicious PDF — malware analysis report

Static analysis result for SHA-256 b201aa22ee4634a1…

MALICIOUS

PDF

36.0 KB Created: 2021-06-18 07:06:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6f3c56e669e51aff5eeca86f6ac4b54e SHA-1: f227b7ffc3db8b9b2415ca606487910577ae2e84 SHA-256: b201aa22ee4634a1ab3f5bd333f60577ce0ea88382e0ba69b65b6768832ae417
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body explicitly mentions 'Hack Roblox Robux' and includes a call to action to download, indicating a lure for potentially unwanted or malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://netcdn.co/app/431946152/hack-roblox-robux-without-playing-games-game-hack In PDF document text
    • http://brandyourbody.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-get-free-robux-on-roblox-without-verification_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-hack-roblox-accounts-on-android_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/hack-para-dragon-ball-z-rage-roblox_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-dead-winter-infinity-hack_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/john-doe-roblox-hacker_GM431946152.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_off000034a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A4 22068 bytes
SHA-256: 338686c34f8693a0bc765e4b02286efdef442bd7272ed2ebb7c6b46cfbdb9f2b
font_01_sfnt_off000065ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AB 19792 bytes
SHA-256: f8dc30296cdc98247ee61e6a75a232c97956ca8dbd593625ca74271871178b6e

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