Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a50e682342ba24…

MALICIOUS

PDF

42.8 KB Created: 2021-05-19 02:09:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ec781af5e8db6c5231cb32dcd3b2960f SHA-1: 5f4b5f4db5dc83bc83cf932e4efe77ecf99f7d72 SHA-256: 14a50e682342ba246c01193f1e7024f1df644708791faa6435f960298c848014
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on them, promising game hacks and free currency. The primary link, 'https://netcdn.xyz/app/431946152/oprewards-free-robux-game-hack', is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to potentially malicious content or phishing sites, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/oprewards-free-robux-game-hack In PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://man1-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_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_003_off00004bd2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD2 24460 bytes
SHA-256: fc596b96341bba1a00f977be8ba34c4365e00ace444751a279ea2b3e55ed879b
font_01_sfnt_off00008370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8370 18756 bytes
SHA-256: ea6a04d6c65882c9dd78ee7ca96c70e45062fdc6b69d68e2fcdc099d3abb6428

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