Malicious PDF — malware analysis report

Static analysis result for SHA-256 84b0436ffd4aba80…

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 08:33:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f4056da6ee1625f5e369143ac9635c4 SHA-1: 084544a606df4a14e8c2b4893a126e7d11725ca6 SHA-256: 84b0436ffd4aba80c1b1b3ed0215e2f36934d1aafcae9017ca79fbaa6b90cb7e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for game hacks and free currency, directing users to malicious redirector URLs. The embedded links, such as 'https://netcdn.xyz/app/406889139/coin-master-free-spin-app-iphone-game-hack', are designed to lead victims to further malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links confirms a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spin-app-iphone-game-hack In PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/more-robux_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://dribledasortegaucho.com.br/uploads/files/coin-master-link_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_off00004a9d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9D 24800 bytes
SHA-256: 22b79697a3bfe2945f2167d20827dcfb08b2e91db879ea003840fac7a109aed5
font_01_sfnt_off000083a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 18052 bytes
SHA-256: 4aba056016aeb65aeba62e03d7234ea924a4b970c64610ba6e784186ab2969a1

Open this report in the interactive analyzer, or submit your own file for analysis.