Malicious PDF — malware analysis report

Static analysis result for SHA-256 099bcc7e5b5e53d2…

MALICIOUS

PDF

41.6 KB Created: 2021-04-27 14:45:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82a59f4a0189c77ca9e1c1a79a47f553 SHA-1: 4cd607cb5622f1d3ea507bfbab74c55760e5b692 SHA-256: 099bcc7e5b5e53d2d528a292bf0dd3bafa1d6c2ee2897a81b624990706010189
200 Risk Score

Malware Insights

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

This PDF document contains multiple links to websites offering game hacks and generators, impersonating brands like Facebook to trick users. The heuristic firings indicate it's a malicious redirector designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest an attempt to exploit user interest in free in-game items or cheats, likely leading to credential phishing or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/deadly-sins-retribution-release-script-roblox-hack-game-hack.
  • 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/deadly-sins-retribution-release-script-roblox-hack-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-comment-cheat.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-hack-no-human-verify-for-tablets.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-it-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-frisk-shirt-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-dragon-ball-rage-hack-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-phone-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-2021-generator.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/field-of-battle-roblox-gold-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-change-your-username-on-roblox-for-free-mobile.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/easy-hacks-roblox-download.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_off00004295.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4295 26244 bytes
SHA-256: b81ce4041fec69eafb92330310bb6be49136756307f34b4e6b36fcb71add422a
font_01_sfnt_off00007dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 19244 bytes
SHA-256: 518ac5e345949b06228c166836dbce073e3a389238b391b541d946e0fba95cb6

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