Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc14551fe26cacf…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 03:56:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5385d596aeb2e3ed0e1eba18805c65d8 SHA-1: 15a064ed1edb5ef94349c23b81b0b75fe5c1931a SHA-256: 3cc14551fe26cacf146e12ba4a3477e4a04be6ab37daedfd1b5f1ec8f94cda42
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/431946152/how-to-get-free-robux-com-game-hack PDF link annotation
    • https://slims.bakrie.ac.id/textbook/repository/pokemon-go-free-gifts_GM1094591345.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-roblox-cards-no-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-many-has-roblox-warrior-cats-been-hacked_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robloxs-how-to-get-free-tbc_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-ha-sido-hackeado-por-john-doe_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-prison-life-hacks-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/cheapest-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-samples-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/five-nights-at-freddys-2-free-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/robux-claimer_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_off00003245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3245 22188 bytes
SHA-256: 3f6e41736e80f7bb098aa689a413bb61052f5e7b0d4133890db5bae989987ee0
font_01_sfnt_off00006386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6386 19244 bytes
SHA-256: 2a82a6b4e88d45175d2fe2eaf287537d274cffbbed35dd56f8b6e767c09dfc54

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