Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aadbf5cb613e76e…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 19:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6312e95ab2a558cb056b434e7f142b47 SHA-1: c1e218ba3a107be11dd859de7dfe047b05614128 SHA-256: 1aadbf5cb613e76e44a0ad7ac5165da9ac22b898a7ded51a7cbd5a46eae62d4b
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary redirector URL is http://netcdn.tw/app/406889139/coin-master-sound-daily-free-spins-link-today-game-hack, which likely serves as a gateway to further malicious content or phishing pages. The document's structure and embedded URLs suggest an attempt to exploit user interest in free in-game items to deliver a payload or compromise credentials.

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-sound-daily-free-spins-link-today-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-items-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-how-to-get-gamepasses-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-peoples-password-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/omg-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-roblox-login-password_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/https-iosgodscom-topic-20213projectrobloxhackbeta-page5_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-t-shirt-deacls-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-generator-without-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-no-password-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hacks-for-roblox-parkour-fly_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
font_00_sfnt_off00003232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3232 22632 bytes
SHA-256: d1f5a9e3b5ed606ade37b4ee3df03636d2d887fd178bd3b00a868d336bcd5005
font_01_sfnt_off000064c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C2 19080 bytes
SHA-256: 3cbc293ef628fb4705ac7f66d217295b20ff5e8f6a59663341d656d2499a7cc6

Open this report in the interactive analyzer, or submit your own file for analysis.