Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa22b46bda1540e2…

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 14:18:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f9088560357df8795cc4a9643e8bfc86 SHA-1: c870799163f9e9fab772ff61b81036317575931d SHA-256: fa22b46bda1540e2e18b2b2f236171f8a6a4d0db967f32a54714aa3d7e52abfa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators to entice users to click on embedded links. The primary link, https://netcdn.tw/app/431946152/hacks-para-roblox-2021-noviembre-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for further malicious activity, such as downloading additional payloads or redirecting to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/hacks-para-roblox-2021-noviembre-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-games-and-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-18_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hacks-and-cheats-that-work_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spin-realme-products_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
stream_004_off00005083.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5083 27188 bytes
SHA-256: e960b66e5a6d92ec88b323c40f578281d48e25559d31861030fac43ce0424870
font_01_sfnt_off00008e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E18 19232 bytes
SHA-256: 1ab627875fda47e1b1be1a97591d9b2767a25814683b8ad45eac7f6079393d69

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