Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3d2fd94bdbedcff…

MALICIOUS

PDF

34.3 KB Created: 2021-07-08 01:28:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 143bf9529a2653d38f0bd18d98601d47 SHA-1: d923b37e5ad6f4bb8468d2b91bd37c7d78e6eafc SHA-256: c3d2fd94bdbedcff95915a9c5d7d266b9dd74b5d90b2f3ec41f9b148e4f8e777
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The primary lure URL is http://netcdn.tw/app/406889139/blogspot-free-spins-coin-master-game-hack, which is flagged as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

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/blogspot-free-spins-coin-master-game-hack In PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/roblox-hack-dark-devs_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/what-tiktok-free-views-without-verification_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-robux-bc-admin-leaked_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/aux-s-roblox-hack-pack-v2_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn9jombang.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_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_002_off00003090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3090 22480 bytes
SHA-256: 6b47e10cb3b1b0f4bee217de75e381657decd4494e5235aee53c4859950a401d
font_01_sfnt_off000062c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 18464 bytes
SHA-256: 230ca97f16dd2ddf1879142f15263642e6919db147f0bcf840325c8143f28d8e

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