Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ec88918e35f3b1…

MALICIOUS

PDF

33.7 KB Created: 2021-07-08 23:42:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a675ee193c707cc795a6d3d54818fb58 SHA-1: dd2dec980d78e3f6c18ea5376faacfea3c72088d SHA-256: a7ec88918e35f3b183f886699b2148ae3fedc85308158f3ded6f1736935f5c8e
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/479516143/get-minecraft-windows-10-free-game-hack PDF link annotation
    • http://razredna-nastava.net/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-lua-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/poke-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-free-draw-script_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-make-a-roblox-ad-for-free_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/add-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-girl-hair-roblox_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
font_00_sfnt_off00002eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAA 22008 bytes
SHA-256: 4a1b3e91ab6c14eb8083b638f6035a191b14283a07ff047a983ef61ee242ad65
font_01_sfnt_off00005f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F60 18812 bytes
SHA-256: 611e0fe8ef0e09460557208b470d6bb305c401f6b817a80b09e66ff1eb668ddb

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