Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcf2671dba2bfb9…

MALICIOUS

PDF

41.7 KB Created: 2021-05-12 13:37:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 7573660f6d5ae8c1fd88ad9638b2fd61 SHA-1: 4496247100900156838e8911bcc348aa6b8b6a9a SHA-256: 1dcf2671dba2bfb9162e5dddb048e27edb570b2c177a9be5a9f220bd7701c3d9
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/406889139/coin-master-hack-apk-online-game-hack In PDF document text
    • http://elsenorcafe.com.co/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/robux-game_GM431946152.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elsenorcafe.com.co/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004955.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4955 24536 bytes
SHA-256: 6c17c6c2ce9df8f71be59adbb282e3385cff357cb57485267a00e4840f9360a0
font_01_sfnt_off00008180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8180 17968 bytes
SHA-256: 242ffb3ae23aaa88f863c4a264d986e0fcfba56dd77541db73c8f2987a2b9a1c

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