Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab845f15cb4deb41…

MALICIOUS

PDF

36.6 KB Created: 2021-07-04 10:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d1f2daa70cd19df6cd683de13a750b9f SHA-1: feef757dd51b4d6f317d4dfe57d8b884666f3d22 SHA-256: ab845f15cb4deb41e6a0bc7b533007e5f14ce6037d71e000e245512237a0c45a
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-hack-tool-for-pc-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/robux-how-to-make-a-promo-code-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/meme-attack-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-on-ios_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-waiting-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/nonhacking-and-or-inspecting-for-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-roblox-scripts-to-hack-games-feree_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/nascar-17-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-promo-codes-2021-june_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/2021-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-speed-up-roblox-with-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-de-fly-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-apps_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_off000037fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37FE 23288 bytes
SHA-256: f725bb03aadb0cd54f5b16c1473009c05e54a336c5b681fc4c49a781141f4f48
font_01_sfnt_off00006c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7C 18396 bytes
SHA-256: 80da1b26748c0421ddbffdda9c90c0e7a8145a19b82875246f398f650b172979

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