Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84eb2dc42a6e4aa…

MALICIOUS

PDF

36.7 KB Created: 2021-07-04 01:12:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5f7dee4d924e845318ce544417b0b7f8 SHA-1: 16b3385c9bce054a2de9e25159249b0e895b9a27 SHA-256: d84eb2dc42a6e4aa7beadef02ebf565803a9c482d2ae5255cc16bcae90665ec5
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/download-minecraft-java-edition-free-game-hack PDF link annotation
    • https://amazingnepaljourney.com/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/tiktok-unlimited-free-trials_GM835599320.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/username-free-robux-site_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-hackfree-robux-and-membership-hackaron_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/minecraft-survival-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_off0000375c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x375C 23268 bytes
SHA-256: c7981584b2af9c8e5a432545faf0480118a7a74dece50dad9f57e3be72eca8cc
font_01_sfnt_off00006b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0F 18856 bytes
SHA-256: e95e0befe6b0f5e52bf26004d68c5314d9c4319229837ab9b7c393f21c81bf12

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