Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d8dc3fe9772831…

MALICIOUS

PDF

44.5 KB Created: 2021-05-16 16:26:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: abdda2b3d432efaa8f95f71b4d2d8e72 SHA-1: a30a2f25b4f62b3266201025d047a724bfc10a87 SHA-256: f4d8dc3fe9772831bf7585dac8986cf4304e6804ba11fa348b0edf840ba5bd22
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The heuristic firings confirm these links lead to known malicious redirectors and a lure for game-related scams. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggests a phishing or scam attempt, likely initiated via a spearphishing attachment.

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 https://netcdn.xyz/app/431946152/free-robux-gift-card-game-hack In PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/how-to-hack-coin-master-with-root_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.lifegoeson.in/uploaded_files/userfiles/files/free-spins-coin-master-app_GM406889139.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
stream_003_off00004c11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C11 27496 bytes
SHA-256: 07f5d420d3ddf4bcd9b318002fe13474ce4427673e4151199cd3ab10b2d549e7
font_01_sfnt_off00008abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABD 18640 bytes
SHA-256: 59f1432744b9d8cf879cb7c8a299bbbbba85d5427cd565107f85277265ec050e

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