Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c0712d65bdd0fb…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 08:31:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ec224e3bac607e7bb3b7920ddcaebc9 SHA-1: 8d0a4900efbb3c40175bd28e3c773882749449f4 SHA-256: 67c0712d65bdd0fb41444d3c34283c75696579c60d950e4b474394067a20b139
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious workflow. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure the user into downloading or navigating to malicious content, likely via a JavaScript exploit or similar mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-hacks-no-downloading-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-survey_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_off00004b59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B59 25560 bytes
SHA-256: 1d55655d4fa0b0f8a1380dfcd4d030458b88456beefe45840f192880feddb0b6
font_01_sfnt_off00008684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8684 18584 bytes
SHA-256: 7478f31c8577c6ab88e720a63aa35b1352af97e65bb114ce556c39ffd62b7789

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