Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2ee76e25871c10e…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 15:11:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df665964128a80f7d1e08ddd9b510436 SHA-1: 100d20ac76bd7a39889432cf977e2f2d9c7b323f SHA-256: c2ee76e25871c10eb15cb23d6c333e08c3e2192707e6d9aea267987bc4e7d920
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.tw/app/406889139/coin-master-card-link-free-game-hack. This URL is also listed as a known malicious redirector. The document body and embedded URLs reinforce the theme of free game resources, likely to entice users to click the malicious link. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-card-link-free-game-hack In PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/robux-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/master-coins-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-robux-mod-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-money-in-roblox-bloxburg-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-roblox-groups-no-owner_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-the-fly-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021-october_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/can-i-have-a-free-nanner-roblox-id_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31AF 23728 bytes
SHA-256: e7372a926d2906485473949549fc0111ca091398194ffc81d505ee52fd143913
font_01_sfnt_off00006789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 18340 bytes
SHA-256: 125df22db7ff6d9e99adc6a2128c08e95da839009b63521109df6d29364d5411

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