Malicious PDF — malware analysis report

Static analysis result for SHA-256 421a2b3b11184349…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 00:51:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29449f9de564f0ca9a49df37397173ee SHA-1: c821970e5255d80de35583c2d006471204596a3f SHA-256: 421a2b3b1118434942d2ae80923f3f5e4159adc678500757dad7eb55168bc210
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a critical heuristic firing for a game hack redirector lure, directing users to a known malicious URL. The document body reinforces this by displaying the same URL and related keywords like 'Hack Coin Master Apk Download'. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the primary attack pattern involves luring users to a malicious site via a document attachment.

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/406889139/hack-coin-master-apk-download-game-hack In PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/piano-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/earn-free-robux-the-legal_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/easy-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-hats-on-roblox-without-inspect-element_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-html-hack_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-roblox-gift-card-generator-2021_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-free-password-and-usernames_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-vietnam-2021-hacks_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-robux-no-human-verification-2021-working_GM431946152.pdfIn PDF document text
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/http-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E94 23124 bytes
SHA-256: 67791b0193de344bfa0e78fd284bb2949abc8c83bb0991b3624e4474929b48f6
font_01_sfnt_off0000615d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 18760 bytes
SHA-256: 345ccc7577c06927ea46758c8888bad98130d585e1ba2acf6a86671e882058d6

Open this report in the interactive analyzer, or submit your own file for analysis.