Malicious PDF — malware analysis report

Static analysis result for SHA-256 5798754331d6357b…

MALICIOUS

PDF

44.6 KB Created: 2021-05-17 19:43:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe00bd725185810576132572b4255fae SHA-1: cc0971182cc34b57bd44e80eabb4381158729fc1 SHA-256: 5798754331d6357bdf2a286c347779eb7565fd9c9bc66925ca31e616b0516678
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hack generators. The primary lure is for 'Coin Master Hack Program', directing users to a URL that likely hosts further malicious content or exploits. No scripts were extracted, but the embedded links and the nature of the lure strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/406889139/coin-master-hack-program-game-hack In PDF document text
    • http://vagency.us/images/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://vagency.us/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E0 25084 bytes
SHA-256: 376cd6a0cad156c7cf28bd7ea6bbaee887a0c5b7db554f29be3088cf4edb3f57
font_01_sfnt_off000080d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785
font_02_sfnt_off0000a33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA33B 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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