Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd118fbea36d0f8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 13:36:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: bcc89602d5669945864fc0cb315bed8b SHA-1: 6aca3ee7e1877a3fce9e7cef86f19072dbcdf289 SHA-256: 2fd118fbea36d0f822c6e589154b368519e437f9e21c675dd7a82cd8e42d388d
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-game-hack-version-download-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-on-youtube-on-your-phone_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/20212021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-put-shirts-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/did-momo-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/2021-robux-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-jailbreak-money-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/did-tofuu-het-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-command-cheat_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-robux-2021-inspect-element_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-aimbot-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-survey-legit_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-robux-free-no-subscribe_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-ultimate-driving-money-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-10-dollar-gift-card-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/darkrp-roblox-hacking_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_off00002f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F55 23000 bytes
SHA-256: ba75701a145fdd21b3e6bb13ce92472af9fef043bef7aa5d6277ea0161c21fc1
font_01_sfnt_off000062cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 18976 bytes
SHA-256: e69f8afed9cbcb37a9daf56eb9a9ff88e0b9c91e2a2707cae97c42366c908501

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