Malicious PDF — malware analysis report

Static analysis result for SHA-256 267a16c0d0e161d7…

MALICIOUS

PDF

48.9 KB Created: 2021-06-09 17:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89a2edba6c931d055d2e11914d4a4e48 SHA-1: a4b71ed72818fd35e0a928f391f0d21a905ed58b SHA-256: 267a16c0d0e161d7f50a2eaae65755a5c4430edd14dd8544381a8e30a54f9084
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as offers for game hacks and free currency. The document body and embedded URLs strongly suggest a lure to trick users into visiting these malicious sites, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure and heuristic firings indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/2021-promo-code-for-free-robux-game-hack In PDF document text
    • http://suaedy-library.net/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/10-dollar-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/pubg-uc-india-price_GM1330123889.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-stuff-on-roblox-2021_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_004_off00004f91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F91 27212 bytes
SHA-256: 870962a5ff346debbbd7b45f38bef2bacd609dd89f6080e26e541b194ff55561
font_01_sfnt_off00008d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D67 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A79 19004 bytes
SHA-256: 04b4bd1fdd0baa5fd6352e92f4572e2b5e5a1e3e513e73d6e370e462445b5ec1

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