Malicious PDF — malware analysis report

Static analysis result for SHA-256 98317e7d9a41219f…

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 04:15:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 324e834907d62acd81882268fb29d6e8 SHA-1: 09f029aa90724453ca70bcb144da52d793902c8f SHA-256: 98317e7d9a41219fa559135676423ef05f2903526c99c098e9c6053c40c9629b
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 https://netcdn.xyz/app/431946152/free-robux-no-anti-bot-verification-game-hack PDF link annotation
    • http://bit-sky.com/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/robux-survey_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/robux-match_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004804.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4804 32136 bytes
SHA-256: 439062064067b00ff3f06c8dc4347ac816d9ea29b3d01017ce97c829f887a634
font_01_sfnt_off0000901b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901B 18600 bytes
SHA-256: 8cfd8c2479ee29cd4f6dba9b0ab7f96f8a0f4a4bb194f6119df547073888af7b

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