Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0513ec427df023…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 11:55:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fa85a3308ae01410bc723d224ab9eb59 SHA-1: 20553f97efd50068e76ec8abf47a23d5bf9377d2 SHA-256: dd0513ec427df023793c2b23d5e24f686e0a2d702716b648f3c9d513fbbd0de3
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/406889139/game-hack-coin-master-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-weight-simulator-3-cheat-code-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-cool-free-tshirts_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-easy-way_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-rich-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-march-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robuxcom-real_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-app_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_off00003186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3186 22992 bytes
SHA-256: 42a8ded50c90ea1e597d9895959b247cb24000f7ed88f36c1b9127fe5950c47a
font_01_sfnt_off000064d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 18264 bytes
SHA-256: 9efe2486ae0edfd787cd5e200ecf5a6ad4e76f48b1d9c09a1a4b5b4442c2c8b2

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