Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db0cc935cf4e1ed…

MALICIOUS

PDF

250.8 KB Created: 2021-07-06 04:01:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 561a080a7410e3c11b1b8a7de7af1e5f SHA-1: ca8c301cf3ab1a05c324cee27c6cf30e66dce9cb SHA-256: 6db0cc935cf4e1ed486c0c3c1be3a7bfccdeabe575a39a679848438d138f6455
180 Risk Score

Malware Insights

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

The PDF document employs a game hack lure, impersonating brands like Apple to trick users into clicking malicious links. It displays a fake CAPTCHA and uses urgency tactics to encourage user interaction. The primary malicious URL identified is http://netcdn.tw/app/1330123889/pubg-uc-lucky-draw-game-hack, which likely serves as a redirector to a credential harvesting page or a malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 8

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.tw/app/1330123889/pubg-uc-lucky-draw-game-hack.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/1330123889/pubg-uc-lucky-draw-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/icarus-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-a-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-item-with-card-purchase-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/all-free-in-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-free-gift-card-codes-reddit_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/do-you-want-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-any-roblox-game-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-hack-roblox-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-the-rake-admin-hacks_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-welcome-to-farmtown-beta-hacks_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/jailbreak-script_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_024_off00037d59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37D59 26028 bytes
SHA-256: b6f2cc2a3bbd84a7d13d323b8f7712da41d4c6aaff8d686c3e6edf27a5667c0c
font_01_sfnt_off0003baa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BAA1 18808 bytes
SHA-256: 3d22868b7017c601ad9999ba126f56a1613bf9a9ea7a8a6fac475f81e1568df8

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