Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50a85938be0969c…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 03:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02533b5b8d43576b78f711a6f8941859 SHA-1: 60b680048703eda9b785b77e8200b71921bb7f49 SHA-256: a50a85938be0969cda65a3fdd4f11e3fd58e997f2686bc3d7a87aabac648d297
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or phishing pages. The ML classifier strongly supports the malicious nature of this PDF.

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/479516143/play-minecraft-for-free-on-pc-game-hack In PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-2021-free_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/veil-roblox-exploit-free-download_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-how-to-hack-someones-account-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/cara-menjual-barang-free-menjadi-pakai-robux-di-roblox_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/tiktok-accounts-for-free_GM835599320.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_off00003161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3161 22584 bytes
SHA-256: d7fb19b927d4ad41f67ef3d0feed67505a606295300be021f26fbb8c0db2fe40
font_01_sfnt_off00006369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6369 18408 bytes
SHA-256: 21b2137426b476267ea7c0394b250426d475a18dc6e7bf5e59e9a16705a70499

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