Malicious PDF — malware analysis report

Static analysis result for SHA-256 d286ab08d76b73a9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 22:27:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c958a70675f389ac4f1ed93108544d6f SHA-1: cb9a09e0d7951f11c950ccc308e26193e9b7f8b3 SHA-256: d286ab08d76b73a9177a59f10a3b6287742307381a611e7add2b90974414c8c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a generator for free game items. The document body and extracted URLs strongly suggest a lure for users seeking in-game advantages, which is a common phishing tactic. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to lead users to a compromised site or download further malware.

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/roblox-captain-underpants-game-free-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-free-gift_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-club_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-can-i-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-generator-no-scams-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/play-roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-april-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/good-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-bear-cheats_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-in-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-igg_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/monaco-base-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-how-to-hack-a-perso_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-superhero-body-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-shirt-girl-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-on-ios-2021_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_off00002f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4B 22848 bytes
SHA-256: 2b47974c14a9f6405509f0f997c38f9088ac5bece2324ddd3383ad87bef9dbd6
font_01_sfnt_off00006289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6289 19484 bytes
SHA-256: 96519497cbba469250d133be6811d7457445a0d99212e2feda45c7b3b095159f

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