Malicious PDF — malware analysis report

Static analysis result for SHA-256 947a23bd67f22635…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 09:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6e7dd6a56f8f9fde8be5633f5d6ac108 SHA-1: c0fabd7250f5133cfcf5aa99a667c87355cbe539 SHA-256: 947a23bd67f22635c8db7d75627ad76f10e47d5687ecbf8455ddb6ad11d063a4
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/479516143/minecraft-noob-vs-pro-vs-hacker-game-hack PDF link annotation
    • http://make-up-stettler.ch/images/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://make-up-stettler.ch/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://make-up-stettler.ch/images/free-robux-human-verification_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_off00004aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEE 24744 bytes
SHA-256: 9630adc305d9de949c62617037aff4d08244c11b6765c9e768005aeadc0945cb
font_01_sfnt_off00008348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8348 18328 bytes
SHA-256: a3a1f77715833b119a7491346a779344ae6dab601cd7000bc388e6bf0c64b7ed

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