Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeee8b5e74312fce…

MALICIOUS

PDF

35.6 KB Created: 2021-07-08 11:12:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 854a8fdd718d2e33a1e2f56aaf93eb65 SHA-1: d7cff402facdbbddf796232c6835cbe0714eb1d4 SHA-256: eeee8b5e74312fce4e23e31b4b49fc0b4f7b20929c6b7ade310fb6ebf5e0b3c2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links designed to lure users into clicking on them by promising game hacks and free in-game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'PDF_GAME_HACK_REDIRECT_LURE' specifically identifies the deceptive nature of these links. The document's content and structure strongly suggest it is part of a campaign to drive traffic to potentially malicious websites or distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/2021-free-spins-coin-master-link-game-hack PDF link annotation
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/hack-roblox-executor_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-hack-dark-devs-one-piece_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-game-card-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-bundles_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-cheats-for-robux-for-phone_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/roblox-cheat-2021-with-temp-files_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/cyber-roblox-hack_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_002_off000032d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D4 23196 bytes
SHA-256: 2fe4e55b5a63409510633ad35e73d9ad7e8796bb445f3588ffcdfaeb26b7b89a
font_01_sfnt_off000066f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 18748 bytes
SHA-256: 06bd034753b49a7d0cfb2aac0b95d0bc387526a0c49ff8a26704903fcf1c9189

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