Malicious PDF — malware analysis report

Static analysis result for SHA-256 56421980192c347f…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 01:18:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1747a5056b4a6063bfb92aeb5a7592f3 SHA-1: fae2845cef85cbdf59ec66d1e43ee8214d2e7911 SHA-256: 56421980192c347f2299378baf78b5675eba8b07f0f32200f3841f5b88012480
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The document body and heuristics indicate a redirection workflow designed to lead users to potentially malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/431946152/free-robux-with-no-human-verification-game-hack In PDF document text
    • http://suaedy-library.net/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-greasy-fork_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-cojer-cosas-del-catalog-sin-tener-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/tiktok-unicorn-free-download_GM835599320.pdfIn PDF document text
    • http://suaedy-library.net/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-pointsprizescom_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-2021-may_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-vesteria-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-roblox-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-time-hack-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_off00002e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9D 21804 bytes
SHA-256: e0794aaa734a2d64b7e00b6741d9b6c1fc2031a19aa30067be5edfec7234b524
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 19700 bytes
SHA-256: 35e501b9c45e5927f0fc62a5ada2d4fbbc4f1128da3636f490de4bd32383e5b5

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