Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d40c22a18d5655…

MALICIOUS

PDF

44.3 KB Created: 2021-05-14 09:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 376d494c686569563a6f3a081b77a361 SHA-1: f3abad58251016062f62b5a0ad7dc84a3b94fd67 SHA-256: a4d40c22a18d56551a6f0a79e6faf9afb6736c43c98e53e5c681388c145dd209
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/479516143/how-to-create-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-can-u-get-free-robux_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
font_00_sfnt_off00004adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADF 28856 bytes
SHA-256: 10e8ca618404fdb26526d83ef6cca1256fb45df18f3439464d2b5f864d61a715
font_01_sfnt_off00008bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 17988 bytes
SHA-256: 060fb71443e6007603a371ac142d4c0d51e0ba8cefae348522c79638c30c3a2b

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