Malicious PDF — malware analysis report

Static analysis result for SHA-256 f873181f00b13a38…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 09:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: d0900486bf0826b2fbe4577806db5c01 SHA-1: afc727d00e2258d5693f4c8fc0ba7dc6232bde65 SHA-256: f873181f00b13a389e62b8ff6c6e98070c4a86f60ca753aa109277581abdc483
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/hack-xp-net-coin-master-game-hack In PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/grab-points-login_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://asiashop-france.fr/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499F 25996 bytes
SHA-256: 7edceee1a7ef235a51e201aa0bd5ca17f0a89549d56132d59a0eb7c785de8984
font_01_sfnt_off0000848f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848F 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F92 18120 bytes
SHA-256: 36b1f1d6dc7a0fb39fba57d212ba2259924da134da176bdd19e0fead9c6b0628

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