Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c0e5760a820379…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 01:27:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 039495437f70e9b00c757acd232fd0e4 SHA-1: af6062983e054a51ea58b467aa2017c20cf19bc8 SHA-256: e4c0e5760a820379c0d8bf77380d969e501cd693d40cd5bd879986bd271398ab
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/how-to-download-minecraft-for-free-on-windows-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-roubox-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-rainbow-shirt_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-codigo_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-speed-hack-on-roblox-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-without_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robloxs-cheats-hack-os-android-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-bugatti-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-a-free-redeem-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-2021-without-human-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_off00003141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3141 22068 bytes
SHA-256: 5d04edc10727e020eb5ce3272ade643c98625fd170214b9367055ec8cec05691
font_01_sfnt_off000061fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 18776 bytes
SHA-256: cf0c3ae8133e3539fd492836037b97f79a23c9f8299745d39b424ee0e1eb2acd

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