Malicious PDF — malware analysis report

Static analysis result for SHA-256 d796aebf09d316aa…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 11:04:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a871c7b442c28b6bffd1e9891ff5076 SHA-1: 8c184c4d4adbd20731a6c49688779886564d0527 SHA-256: d796aebf09d316aa3eb3544c4ff0a7fd275d7d4a7b635662aa6408a6330ca6a6
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.co/app/431946152/download-robux-hack-no-downlowdes-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/roblox-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-add-robux-to-used-roblox-card-cheat_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hacks-for-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-without-offers-or-surveys_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/april-2021-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-robux-for-free-on-bowser-instantly_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-insta-arrest-hack-jailbreak-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-for-free-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-easy-steps_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-use-cheats-on-roblox-deathrun_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-rap-lyrics-for-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-with-no-verification_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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 23428 bytes
SHA-256: 5830e00a292c21fc4948424b2ba73f289f2db4d832c9091a785961d8a63003e3
font_01_sfnt_off00006603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 19304 bytes
SHA-256: 2ad79f89ecceba7e0346540ca05c32cab04c40fced9aea832de6ae364bcf7d3b

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