Malicious PDF — malware analysis report

Static analysis result for SHA-256 b92134e594932832…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 05:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07521b0722d4de74c354a26dad6fa087 SHA-1: 2eeeae259c7abca99090bba81cac112e3af33790 SHA-256: b92134e59493283204e243bee3c1108f1334efb006bf368aaeb4218e85b301cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically designed to lure users with promises of game hacks and free currency. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious workflow. The document's content and embedded URLs suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting.

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.co/app/431946152/comment-hack-sur-roblox-admin-game-hack In PDF document text
    • https://purihostel.com/assets/CKImages/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/youtube-roblox-jailbreak-hacks_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/how-to-get-ninja-animation-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/those-who-remain-roblox-hack_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/roblox-number-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/hacker-egg-2021-roblox_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/how-to-get-easily-promoted-on-roblox-groups-hack_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/get-free-robux-no-human-verification-real_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/robux-today_GM431946152.pdfIn PDF document text
    • https://purihostel.com/assets/CKImages/files/how-to-get-free-robux-on-roblox_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_off00003241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3241 22964 bytes
SHA-256: c31bd8e6688d9468225459eb37fa09520fc9933c2501cda599572337269d819d
font_01_sfnt_off000065be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 19452 bytes
SHA-256: 653ad000119f7ae5c324908d15e4f6d7936d10993e707830012b414cefcc1ca5

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