Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f418f7b56edb346…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 11:27:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a042844d80edf62f2f412df0cdd29271 SHA-1: eeffe60b6cba740d34ec5b5d72b3b8d2e4757e65 SHA-256: 4f418f7b56edb346b02a07e2695ab3d0981a0ddc482095df3647e3208566c7a8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users to download game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. While no scripts were explicitly extracted, the document's structure and embedded links suggest it is designed to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/479516143/minecraft-dungeons-free-download-game-hack.
  • 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.online/app/479516143/minecraft-dungeons-free-download-game-hack In PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-jailbreak-unlimited-bag-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/tiktok-free-view-iphone-6s_GM835599320.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.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_off00005019.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5019 25084 bytes
SHA-256: a11043dc92cbee334d48cc0766ce5df36823b16337541a0733a1794a8360b01a
font_01_sfnt_off00008997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8997 3128 bytes
SHA-256: e72d8d1e26c87a5aea965968b922732c7406bc33888678dc3a8c04cb95b3c770
font_02_sfnt_off000093d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D8 18720 bytes
SHA-256: 9131f8ae0af3742f2152d673706180936bbe7c3ea282a1fb4d0c655f83237649

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