Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0aafacd284faaa3…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 12:31:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58e41cdac5198cbcc3301cd3816d97eb SHA-1: bd84ab5a98380bd7e8df48a6b6d7b53612e79304 SHA-256: d0aafacd284faaa3aeeac803333f716c4220d5480806292f30430f65c52edcda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to lure users into clicking on a URL that leads to a known malicious redirector. The primary URL, http://netcdn.tw/app/431946152/free-account-roblox-with-robux-game-hack, is identified as a malicious redirector, likely serving as a gateway to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

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-account-roblox-with-robux-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-with-tampermonkey_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/not-fake-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hacks-para-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-gift-card-codes-for-free-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-murder-mystery-free-hacks_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/tiktok-free-images_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-printable-roblox-coloring-sheets_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-comandos-para-free-admin-para-que-parezcas-un-virus_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-polygun-hacks_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_off00002dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC2 22220 bytes
SHA-256: 0cf7a4c9b161bf04658dd3ca05c0274ad7060910f7c34c0767935f1df3b575ab
font_01_sfnt_off00005f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 19376 bytes
SHA-256: aca93b4e3f604d5c7fb305f64f27e26b52b7bc87275afcbcda3d4758617aefe4

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