Malicious PDF — malware analysis report

Static analysis result for SHA-256 8613287994aa56eb…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 03:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7daf37dda172eb4afd05e15344351169 SHA-1: 2e5e2f50683983eb93f9fc19cf1bb7326118f14b SHA-256: 8613287994aa56ebaef6350ea59bdb65941285d3e4ba23b9f59af574e19760cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'robux hack tools' and 'game hacks'. These links likely lead to further malicious content or phishing pages. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-hack-tools-game-hack In PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/robux-offers_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-fun-robux_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_off00004a71.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A71 26872 bytes
SHA-256: dce269f8687a60c9836ab15822dc51c4bee94aa362a29067bdf3f57fc7051e57
font_01_sfnt_off000085c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C4 18320 bytes
SHA-256: cf6d0fcc2a7c18e0ae1e84145e037068603b130caaef77e993c358e364abbe1e

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