Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4f0a35a4eab984…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 20:22:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1059304d2678ddb38692364b382d4187 SHA-1: cbbc880c8a4d8db4c2e468435825d0c042740c90 SHA-256: bf4f0a35a4eab984c4a09223fea840f32c74f1ef3f42e92e3b11a4f4aab5800d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'game hack' or 'free Robux' generator. The primary malicious link redirects to infrastructure known for distributing malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at driving users to malicious sites, likely for further payload delivery or phishing.

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/431946152/youtube-how-to-get-free-robux-game-hack In PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/mcpe-client_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_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_003_off00004be3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE3 24888 bytes
SHA-256: 8b9f73df4d0937e671f506734b0cfcc5b1626112cdda47d1fe43bea1c86ce127
font_01_sfnt_off0000851b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851B 18444 bytes
SHA-256: 19af2615bd9086bd478ca88a6ce690b9ca3ed86297e9e30c9ccbcb4910b84991

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