Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc7a3a3b8e2f468…

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 03:36:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 84e46a0387920f84537e2f41a32cb3ef SHA-1: d8319ed95cde26d29f927cdb4b5192b645b726ee SHA-256: 9fc7a3a3b8e2f468b2b0b21892ebcc966aedd961697cffb8b71283f17479a65a
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 0.9971

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/www-roblox-com-robux-game-hack PDF link annotation
    • https://ogm-goettingen.de/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-download_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/robux-hack-me_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_off000048d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D0 25948 bytes
SHA-256: 7173b03c1d8b4619dded1c4dbece39addc143d51a5df12f11af623a2a8849ed2
font_01_sfnt_off00008400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8400 18548 bytes
SHA-256: b4be1ce4be68d0cff185b6b3f9bf63dfdeebd8cd76f960861369f5a620aef1dc

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