Malicious PDF — malware analysis report

Static analysis result for SHA-256 289f105bfb9efd35…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 15:51:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b5b895e87245ea3f1963db766cf0836 SHA-1: 469a98b40551355cf9864a57d06dfcf18a7700ba SHA-256: 289f105bfb9efd35dfecd710c09a6b98a008626c98deb7e2220013ea4e4eade8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users into clicking malicious links. The document contains numerous embedded URLs, with a primary redirector identified as http://netcdn.co/app/431946152/roblox-players-for-free-game-hack. The presence of a visual download button further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-players-for-free-game-hack In PDF document text
    • http://www.myresidence.lu/userfiles/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-diamonds-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-sword-reach-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/mc-hacks_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000326e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326E 22772 bytes
SHA-256: 549c2e62b0e0d986426494b8c19e9677f03a614f748dc24a66e6f3d590a5dd8f
font_01_sfnt_off0000653f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653F 18984 bytes
SHA-256: 70fe0c014720558ef9ad9e9c436686143fe1583a750d38b0d14f4af852e8cbfd

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