Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2bdd4442ec6cef…

MALICIOUS

PDF

41.0 KB Created: 2021-05-19 21:02:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 91479ccee15a207e9f1f48788c87774e SHA-1: 25516658d087f6ff73b0028182b009c76a45b55e SHA-256: 8c2bdd4442ec6cef7fc5fff0e4f0058a527b02e0dcb6861d4813bb99073eb8e3
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/835599320/is-tiktok-free-on-android-game-hack PDF link annotation
    • https://verstricktundzugenaeht.com/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/robux-survey_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://verstricktundzugenaeht.com/images/roblox-free-exploits_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_off00004843.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4843 24108 bytes
SHA-256: 42dd5aa520d747178b9798d8af0dcb2aad2a36977d043a39f8da18c851e9b9b3
font_01_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 17632 bytes
SHA-256: 78e9a49f5fd19ae20ea5c40af5e8a10d6713086f4b79c9b1b836d95527653a30

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