Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2da92ff7c2e44e2…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 08:24:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c6921a0806b6e46c4a3f5304b0a70ae2 SHA-1: a67da8002b4aad31f90c0ff965163723086f4852 SHA-256: d2da92ff7c2e44e2ebb10aa06265b7c4b4c1623f6159733c302e7d1c8ee6a1e7
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9971

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.
  • 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
  • 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.xyz/app/431946152/free-robux-youtube-game-hack PDF link annotation
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/roblox-tracker_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mi-baabussalaam.sch.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_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_003_off00004b33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B33 25496 bytes
SHA-256: 7e8aa6134b8e091da484d97e2541361717874e572eafda344f5254788b721eaa
font_01_sfnt_off0000857f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857F 18280 bytes
SHA-256: de5b074060e7ee0fa0230ac6212805924cd4a5679e09505111534b28358c176b

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