Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e8d07efdabc394…

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 16:40:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe9b80ca82236fc8b42b8840c7a59a1d SHA-1: 4df96651643427e426be2eace42d47e044cf32af SHA-256: 51e8d07efdabc3946b2994d3941bab4ed31498fcd7a75999ad903795ca381131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure the user into clicking on a "free generator / game hack". The primary link redirects to a known malicious infrastructure. The document's structure and embedded links suggest it is part of a phishing or scam campaign, likely intended to lead users to a site that may attempt further exploitation or credential harvesting. No scripts were extracted, but the PDF's nature points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9630

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/free-coin-master-account-game-hack In PDF document text
    • http://www.homesweethome.pl/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/www-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/mathep_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_off000047c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C4 23540 bytes
SHA-256: a943d128a66c18c2e62482074404541548e866097aff34e4c0a65b2c53901663
font_01_sfnt_off00007ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE5 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000086d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D0 17848 bytes
SHA-256: f7120fc9d40fb44b0e1dad884c259b97d4cdc943ab10fa57fb5029601f08dd69

Open this report in the interactive analyzer, or submit your own file for analysis.