Malicious PDF — malware analysis report

Static analysis result for SHA-256 d40b619aa159974b…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 08:21:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: feed477363fb341107653ea295ad24d6 SHA-1: 4999c295a2383704558f1c925806dc616f106f3b SHA-256: d40b619aa159974b10417cb84ea262b7c9ba64d7e1b32e21052eda0f9c2f83ba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a specific URL. The document body also contains this URL, reinforcing the social engineering attempt to trick users into visiting a potentially malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to a malicious download or exploit site.

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/431946152/rbl-gg-free-robux-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/cool-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-t-oget-ant-free-robux-item_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-roblox-magnet-simulator_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/get-free-robux-no-scam-no-builders-club_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-the-games-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-hacked-for-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/mac-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-free-tshirts_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/best-minecraft-hacks_GM479516143.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_off00002e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E76 22360 bytes
SHA-256: 78c6b2f0762a9de2c304d843622624871f79692d7c335536330bee86c1bf30ad
font_01_sfnt_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 18788 bytes
SHA-256: 59f9ca33a2a7e44c47b5adabbc3ceacc3a6bbd6ffe2d0380a638199fee6fbfd8

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