Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bbf9e64b7b46544…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 06:45:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b78db5bb49e336777534e299e81e5137 SHA-1: ca4c19ef4f1bf650e498a8e6a9c3b317a9c91868 SHA-256: 8bbf9e64b7b4654408bf99aa444f8e12501d6d1ef963e0faba0504b45c6360b2
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/479516143/minecraft-wurst-game-hack PDF link annotation
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/my-roblox-account-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-one-step_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/robux-2021-free_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/mythical-chaos-robux-hack-v3-0_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-dayz-battlegrounds-cheat-codes_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/pubg-mobile-uc-xyz_GM1330123889.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-generator-virus_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/email-scammer-claiming-to-be-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/roblox-nsfw-hack_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-free_GM406889139.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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 23556 bytes
SHA-256: 550a58db8e224607a91a16654d84da81972828c678b1d68d7f35fc771bc7b496
font_01_sfnt_off000065cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CF 18196 bytes
SHA-256: a23478f9f56669a76cf56b8835be903c3d1a782a7d8b6a30124e2d5a3e2311d7

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