Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b122cfd7fe1077b…

MALICIOUS

PDF

41.7 KB Created: 2021-05-16 08:53:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e7468fadd2bf270948291a96cd2f949 SHA-1: 88d1baaeb12acc64743cd6a536a3b348457a5235 SHA-256: 0b122cfd7fe1077b4767610d6bc9de75e8de6f7c4f8970b7a21844570f8cf7be
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and impersonates Facebook to lure users into clicking. The primary link, 'https://netcdn.xyz/app/406889139/spin-coin-master-free-game-hack', is associated with a game hack generator lure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/spin-coin-master-free-game-hack.
  • 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/spin-coin-master-free-game-hack In PDF document text
    • http://bpbfloydinc.org/images/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/xray-hack_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://bpbfloydinc.org/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/login-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://bpbfloydinc.org/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://bpbfloydinc.org/images/daily-spin-and-coin_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_off00004799.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4799 25156 bytes
SHA-256: 5e1b70fdae7f88f7ccb070e5ccd31228f7bca6035cad0833abd99a3aab284025
font_01_sfnt_off000081ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81EC 17884 bytes
SHA-256: 6361ede382a163d704ed6c8f102c2990305f9cba1a2540397fd15e2a8f655622

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