Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de377b25aba25b6…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 22:58:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 38e56af74db67303415565617f528766 SHA-1: 00d03aab744ca5a57e4f72ddeb6478c099a57192 SHA-256: 7de377b25aba25b627c8d053cb2deba91575b6656c5dba53de22f5d940935097
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 0.9797

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 https://netcdn.online/app/406889139/can-you-hack-coin-master-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-often-pubg-uc-reviewed_GM1330123889.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/pokemon-go-free-zekrom_GM1094591345.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005068.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5068 24192 bytes
SHA-256: c82b10ce1c8fd6df9e126e97c0c8ee48374ed23d7f8b86109bfecb1793ff2f48
font_01_sfnt_off000087f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F8 2896 bytes
SHA-256: 98478e2fbfabd582329b6206c0d46f67523cf5e299cb16118f1065b4dd5ec6a6
font_02_sfnt_off000091df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DF 18020 bytes
SHA-256: 2a833d42ea66e9b84acb7b91147defd58d864c1bb9bc3ae4b7d787d82e58cd2a

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