Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c10200feafdb06…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 22:37:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2f9f9c318db8aecb8da813dcbb505182 SHA-1: 27d57e300b85a5942da06171b7dda5b92b2182d5 SHA-256: 52c10200feafdb060bc38b3fd367233377e4c0fce671a651bac72fe1982231eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier strongly indicated maliciousness, and the embedded URLs are consistent with phishing and scamming attempts. No scripts were extracted, but the document's structure and embedded URLs suggest it's designed to trick users into visiting malicious sites.

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/how-to-try-roblox-accessoryes-for-free-game-hack In PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/coin-master-com_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/25-robux-for-free_GM431946152.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/free-robux-hack-2021-july_GM431946152.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/free-stuff-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://easypay.af/uploaded_files/userfiles/files/coin-master-free-coins-links-2021_GM406889139.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_off00003239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3239 22236 bytes
SHA-256: 9911623793f797cd61a4f7b9e1bdc055d94f864b7dc9921188298b987c8393fb
font_01_sfnt_off000063b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B4 18996 bytes
SHA-256: 1c019ddc872a23045fc6b3be6c47283ecfb85a38987e5067bb697b7bb9d8b175

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