Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c6f4f91df4db4e…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 22:56:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b94a50dcc21a8f18388af89066831893 SHA-1: d086652e1d85267ffa0128867e38e12d35564c8e SHA-256: 47c6f4f91df4db4e7d1b50caf93a43a582cd8783cf3c09eb62aef54eae55c159
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and extracted URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirector chain.

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/www-bloxy-world-free-robux-game-hack In PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-intriga-injector-free_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-cheap-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-password-hacker-online_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/1x1x1x1x-roblox-hack_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-character-clothing-roblox_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/wild-savannah-roblox-how-to-change-colours-hack_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/15-robux-free_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/jailbrreak-roblox-free-battle-royle-code_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-do-you-get-lots-of-robux-for-free_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_off00002fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD0 21748 bytes
SHA-256: 10ff0e654857a7c433f458225c881e8c11f20e63d87cc5e3d9a2f666fbebc14d
font_01_sfnt_off00005f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 19504 bytes
SHA-256: c5532d2eca12d38d65eeedf84d0fe18af2a724b1a21278fa08397e7d40c2dc0b

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