Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a6d8c1d58923db3…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 01:12:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8605b97709f78ecc5d4181a6bc84edd5 SHA-1: 3e7f0de9c5c0b471d9a0bb7d298796fac116f1e0 SHA-256: 1a6d8c1d58923db34352c3099a3b10884e893f7f83b50d7b04574527d58b4f57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free robux' and game hacks. The primary lure appears to be a scam designed to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to further malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/rblx-gg-free-robux-game-hack In PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://grosirhandukselimut.com/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000300d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300D 21920 bytes
SHA-256: 50422d36e67c1f7e2af83d16c0e577e032f308155651b445cd3d23c8f91b1fbb
font_01_sfnt_off00006008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6008 18788 bytes
SHA-256: 5272de1327d809a9ae728a26cc0e875a9c13a139e68b1b71e833ab0b807ac84b

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