Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03a70cdaac7e708…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 12:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dd080ff27bdffce0b58e212311594bb2 SHA-1: 6a658d8c81d089f1f6773d11d53095a9ee4c47ae SHA-256: c03a70cdaac7e7085383f31f9f2840ee46244ca2e62c1ea4971e2c7d7d0a5d61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote game hacks and cheats, specifically mentioning 'All Roblox Portal Heroes Cheats'. It directs users to a malicious redirector URL, http://netcdn.co/app/431946152/all-roblox-portal-heroes-cheats-game-hack, which is flagged as malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document's content and the malicious URL strongly suggest a phishing or scam attempt designed to lure users to potentially harmful sites.

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.co/app/431946152/all-roblox-portal-heroes-cheats-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-password-with-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-secret-forum-hack_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-codes-2021-august_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-someones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-candy-roblox-decal_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_off00002f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9E 21988 bytes
SHA-256: 8dd5c97de927cce52d0964a4e46fd032f164e6f74118249ce0434a01dca57242
font_01_sfnt_off00006085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6085 18912 bytes
SHA-256: 2bf2b5f30363cdb21fea14ccc3eeb5b35f824e58c7e8651ea48c6581215325da

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