Malicious PDF — malware analysis report

Static analysis result for SHA-256 315733d6bf5735c8…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 22:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d23541d6a259bed79864a2bed8a5bbc SHA-1: 1114b955c7b1c80f6cc6214c06f96ffea568b8b7 SHA-256: 315733d6bf5735c80ef42921d986dc9357442cc553d931401621faed14564ab7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and a heuristic firing for an external URI, all pointing to sites offering game hacks and cheats. The presence of a visual download button lure further suggests an attempt to trick the user into downloading a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/blox-fun-info-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/10-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-download-android_GM406889139.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_004_off00004ecd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ECD 24672 bytes
SHA-256: 4fdc338db067f1506f4be09b35317a1c1cde54e506b9d372b8525357d8694f1d
font_01_sfnt_off00008802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8802 17928 bytes
SHA-256: 378f68af7bda96ca08821290e5d02393c78bb3c0fb942949d143c89702000491

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