Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1d8de6178ed3fe…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 20:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d4f31c97ecf60ddb154ad82a92309ff8 SHA-1: fef9215f27100029f3a9b3d65afc4a7720039c39 SHA-256: 0b1d8de6178ed3fe48176bf9e9b74a64508d48c7486a681abe49fa268ceb43bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that these links are known malicious redirectors, and the document body explicitly contains the primary malicious URL. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

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/479516143/mcpe-download-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hacks-para-counterblow-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/lua-executor-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox-real_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-create-roblox-hack-place_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-someones-account-on-roblox-2021-february_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/follower-fr-tiktok-free_GM835599320.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/redeem-robux-card-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/download-cheat-roblox-mod-apk_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/800-robux-for-free-roblox_GM431946152.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_off0000310c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310C 22344 bytes
SHA-256: 1731e5c4a1040d100afa6b1f766136984ae566191998e632e057ce72bf174202
font_01_sfnt_off00006287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 18532 bytes
SHA-256: 9158b95a41da82deb58e902ec4c5b7843adbff013b9b6420353e3c47105fb3e1

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