Malicious PDF — malware analysis report

Static analysis result for SHA-256 376654d58b62b651…

MALICIOUS

PDF

50.9 KB Created: 2021-06-11 01:23:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 500110e757cbef2b48816e7c689d823b SHA-1: 62f6820085793378e8bf7babbe028b079ef26d42 SHA-256: 376654d58b62b6518743e49e177003e8bcae1ab766a5e58523299b2127b050d1
122 Risk Score

Malware Insights

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

This PDF document uses a lure related to game hacks and generators, impersonating brands like eBay to trick users into clicking malicious links. The primary link, https://netcdn.tw/app/431946152/hacks-for-roblox-2021-for-mac-game-hack, is associated with a credential phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for exploiting vulnerabilities or redirecting to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9744

Heuristics 5

  • 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.
  • 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: https://netcdn.tw/app/431946152/hacks-for-roblox-2021-for-mac-game-hack.
  • 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 https://netcdn.tw/app/431946152/hacks-for-roblox-2021-for-mac-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/kick-from-roblox-after-open-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-pet-ranch-simulator-dark-serpent-cheat_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-v30rar_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/pubg-uc-ykleme-hile_GM1330123889.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/top-10-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/business-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacker-egg-2021-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-email-rewards-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CA 32004 bytes
SHA-256: 18e9eebc9df02d082fc0bb9a84ac02874264197112d99337edcd8e49dcdd4725
font_01_sfnt_off00009892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9892 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000a243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA243 18944 bytes
SHA-256: 539da9b3cc7997ed6770f607d9da2f4070395156e820fab4c411aeea56b946f5

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