Malicious PDF — malware analysis report

Static analysis result for SHA-256 800c669249221f82…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 01:50:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dd666a012fff44b59a2cea5ecb0253be SHA-1: 74de922bfdabc46d75cf8e87ad15322273bfbc89 SHA-256: 800c669249221f829f1e841f9c2c1d9bf9e9426bce9eda76d289451568eac1a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-mod-apk-game-hack PDF link annotation
    • http://www.sharp-calculators.com/files/ckfinder/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/games-for-robux_GM431946152.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.sharp-calculators.com/files/ckfinder/files/static-moonactive-net-link_GM406889139.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_off00002ef8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EF8 22380 bytes
SHA-256: b32575771bcc462449710868d372f769e55dd87183fd3b890a2a813f6af365e0
font_01_sfnt_off00006085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6085 18352 bytes
SHA-256: 8921705bb0180ef928bfc54a8bff441144a325a835df77ae2345570de02769c4

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