Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7131a651101b56…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 20:16:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c2b9b04bb8da2e63e025f7d4df1ae94 SHA-1: 8f233bc3ff3033ab2385fe4d20ce8f425149c919 SHA-256: 5a7131a651101b56d05ca46658c94326eda10cf2298ea3c1c8f476e65842ea86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as offers for free game currency or hacks. The primary lure URL is http://netcdn.co/app/431946152/free-robux-without-verification-2021-game-hack, which is associated with known malicious infrastructure. The document's content and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/free-robux-without-verification-2021-game-hack In PDF document text
    • http://svadba-moda.kg/images/how-to-make-your-own-robux-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/anti-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-with-private-group_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/killaura-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-us-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-one-piece-millenium-hack-no-script_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-100-working-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-hack-in-to-notleah-roblox-acount_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-premote-group-on-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/hack-roblox-2021-genirator_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-followers-on-tiktok-fast_GM835599320.pdfIn PDF document text
    • http://svadba-moda.kg/images/hahow-to-hack-roblox-fly-on-sky-ward_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-manquin-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-did-someone-hacked-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/hacking-engine-for-roblox-easy_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_off00002eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB4 22452 bytes
SHA-256: 0c37e14a91d019c254d6b52266fcff49883b7be6ba8f66459c17338850d28d3c
font_01_sfnt_off000060ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BA 19840 bytes
SHA-256: b77f23397a098c4dc3ad9c6ed3599495bca59c8db3ab458779c0241217e21131

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