Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef8a72d7d040d28…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 18:18:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3be42eba7f54bbeae06943f89545d3b0 SHA-1: 6c3c81404b338d25581a4bdd32b6af1052b19dfa SHA-256: 0ef8a72d7d040d286d400b167ec5e6a2c4fc758499753884b50bc67bf36af83d
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a 'game hack' generator. This lure is designed to trick users into clicking the link, which then leads to the malicious infrastructure. The presence of a visual download button heuristic further supports the deceptive nature of the document.

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/hack-coin-master-spin-apk-game-hack In PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-clothes-on-roblox-nbc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/descargar-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/robux-only_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/hack-roblox-android_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-dantdm-shirt-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/adventure-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-roblox-valentines-generator-just-clicks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-minecraft-hosting_GM479516143.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
font_00_sfnt_off0000336a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336A 23112 bytes
SHA-256: f45226e7a8372567621e3ce134b000980eca28b723b503aadefaaee53ecde3ad
font_01_sfnt_off0000675d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675D 18180 bytes
SHA-256: 63a217cb8f42b9004f1919d6f1355d47daa3fbb76a55303845ac5f558c6d0d34

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