Malicious PDF — malware analysis report

Static analysis result for SHA-256 85bf8a1de77bf68b…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 20:19:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 174e7586bea433bd0a63449f43ebd49b SHA-1: 6a968ad281bba8491307156162f173912e71e7b1 SHA-256: 85bf8a1de77bf68b1fdc0ffca9b7612bbf2c8908872adf23c8dd9e03527010ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/infinte-jump-hack-roblox-game-hack. These links are presented as lures for game hacks and free items, aiming to trick users into downloading further malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or malware distribution attempt.

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/infinte-jump-hack-roblox-game-hack In PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-police-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-working-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-games-hacked-my-roblox-account_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-lua-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-jailbreak-red-boy-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/tiktok-free-like_GM835599320.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-no-verification-robux-generator_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hacks-para-roblox-sin-inyectores_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-welcome-to-farmtown-beta-hacks_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/cheats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-code-easy-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-outfits-roblox-names_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-hack-tool-apk-download_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_off00002fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB1 22136 bytes
SHA-256: 97d023f4b8155eabbac23122d8cdfb7d76ed3454202a506821bf32474d751495
font_01_sfnt_off00006034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6034 19624 bytes
SHA-256: c01d619e1a2e6bf06460bebe77255c9fb72f50c7533a96184530c7dc33b0ba74

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