Malicious PDF — malware analysis report

Static analysis result for SHA-256 8738133e04f7dddc…

MALICIOUS

PDF

45.0 KB Created: 2021-05-15 12:21:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 522752a3c2d996866db43a942bbaf9a2 SHA-1: 2383251cb4fa814ebe0a653b6c26464b2c20fe7e SHA-256: 8738133e04f7dddc4f25b386853ccc65d20100183e43056e32542e6ec031820f
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/can-you-download-minecraft-for-free-game-hack PDF link annotation
    • https://grovehilloutfitters.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/free-robux-codes-no-verification-2021_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
stream_003_off00004c4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C4E 28848 bytes
SHA-256: 743c7d72faf29f97c4e93c87018db57ab876cd960e5d8272e7c73251b3283685
font_01_sfnt_off00008cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBA 18592 bytes
SHA-256: ed5684d9a13e4aff878e16593a586bb1b0a035d61c002246dac68e4b539701c0

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