Malicious PDF — malware analysis report

Static analysis result for SHA-256 af27811972a05da0…

MALICIOUS

PDF

44.0 KB Created: 2021-05-13 01:13:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 0cce62c4d45e3a3811db13c001702db7 SHA-1: 66d19e3d77fdbfc82f6450311bc7c26033c4ed4f SHA-256: af27811972a05da0a4349abb1d350241df349c1f2a91e81a726593171b6b38a0
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/free-robux-easy-and-fast-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.xyz/app/431946152/free-robux-easy-and-fast-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-facebook-free-spins_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_off00004ba1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA1 26436 bytes
SHA-256: cdec32528456b0c9e05f38c06c00af57b1b82a17fb275094e570bf82dfc5d09c
font_01_sfnt_off00008822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 18700 bytes
SHA-256: cd82fd057618e61f88de5dcbfbdf8dcaa9884b2739de6fa529a9953be94575dd

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