Malicious PDF — malware analysis report

Static analysis result for SHA-256 89477d258dfa2e5d…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 03:54:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47fc60ba5247f667380ab28e9f891abb SHA-1: 062cf0c5626072cc0b8826b14cfa41a5ed20b100 SHA-256: 89477d258dfa2e5d78ddc0c98b0852ef36db8dca7cf31127dfae4894fd924873
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hack generators. The primary lure, 'coin-master-hack-apk-game-hack', points to a known malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading further malicious content, likely exploiting a PDF vulnerability or leading to a phishing page.

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/406889139/coin-master-hack-apk-game-hack In PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-rocitizens-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/hack-roblox-site_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/hoiw-to-get-anamtion-ack-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/jailbreak-cheating-essentials-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-get-robux-for-free-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/is-there-such-thing-as-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/get-free-cloths-off-of-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-cbro-cheat-spots_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-hack-pastbin_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/can-you-give-me-free-robux_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
stream_002_off00002fb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FB3 22956 bytes
SHA-256: a68188c071de7da484c56b8b35f3287b1341686cf800f9e3c867a684279c4349
font_01_sfnt_off0000632e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632E 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167

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