Malicious PDF — malware analysis report

Static analysis result for SHA-256 7934f72dd72a4266…

MALICIOUS

PDF

40.6 KB Created: 2021-05-19 02:03:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: ff0106b9146f6601e87b9c4f997823d8 SHA-1: 3439d1579bf158fc23a458b0ca50e860de2d753f SHA-256: 7934f72dd72a4266389c680fcf49bf210fa1b2b2170d3439fff8a5164e34dec5
160 Risk Score

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/1330123889/pubg-uc-2021-game-hack In PDF document text
    • http://karolinaherrera.com/images/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://karolinaherrera.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://karolinaherrera.com/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://karolinaherrera.com/images/cheats-to-get-free-spins-on-coin-master_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_off0000437e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x437E 24780 bytes
SHA-256: d31a575759099f757392fce33145e901413628ca3f0203e1c5632c8aae9a3505
font_01_sfnt_off00007bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEF 18300 bytes
SHA-256: 792744c9184ca8e67024c25d81bb790eba3106c699a66d4813878fab3c321418