Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab49d301745dca48…

MALICIOUS

PDF

36.3 KB Created: 2021-06-28 02:52:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a0b9b006d575df95ea0dd6fd02a652c1 SHA-1: f25ece43bff13cc96f17a7f4ed098c2513ae9a88 SHA-256: ab49d301745dca48a61b0c7a50f40b321a72e3f1a4a944465f98e663dc087c3d
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free Robux' and game hacks to entice users to click on embedded links. The primary link identified, http://netcdn.co/app/431946152/free-robux-gift-card-codes-2021-july-game-hack, is highly suspicious and likely leads to a malicious site. The ML classifier also strongly indicated maliciousness, supporting the observed lure and redirection behavior.

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/free-robux-gift-card-codes-2021-july-game-hack PDF link annotation
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/roblox-how-to-play-games-for-free_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-game_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/free-robux-2021-april-wow_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/cheat-codes-vhicule-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/roblox-skywars-mega-vip-free_GM431946152.pdfIn PDF document text
    • https://www.mtsn1siak.com/__statics/gudangsoal/files/how-to-wall-hack-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/get-free-robux-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_off000034ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34EF 22220 bytes
SHA-256: 865ed0d2aac871eb86447bdd1477beea36e055d19736671368c63031c0379f8a
font_01_sfnt_off0000663e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 19936 bytes
SHA-256: 594436524b077f7b97ddafcb56ab2e97080f019c6792fd5a6e181cb1479b05e2

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