Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f8030f88d1de64…

MALICIOUS

PDF

36.0 KB Created: 2021-07-08 16:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3f8c65b687cc72e6081bf0483b7215b SHA-1: d3f5846eda05155adc07e169beb742e0eebce960 SHA-256: f8f8030f88d1de64ee5f44281ce074ed104ad767f118c66d8fcedf590c13fe10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or phishing pages. The document body and embedded URLs reinforce this lure, indicating a social engineering tactic to compromise users.

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.tw/app/431946152/free-robux-group-payouts-game-hack In PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-many-has-roblox-warrior-cats-been-hacked_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-hacls-no-download-survey-or-verification_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/hacker-roblox-robux-tuto_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/red-boy-v2-jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/noto-clip-hackes-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-hacks-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CB 23080 bytes
SHA-256: cfff6fa0c7a43f09b440426abda6d78f2af02149f6501e6b7f27e3dadd774252
font_01_sfnt_off000066c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C0 19332 bytes
SHA-256: 037bae83bb889f51f40ee04106dd8c63976853147050f5621b1f1569a1c37875

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