Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f429394b26721a2…

MALICIOUS

PDF

46.1 KB Created: 2021-06-03 05:05:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7ee539522717ea6a1833453e911160c4 SHA-1: ac1c220f16532f5413c9cd21acce27335352a731 SHA-256: 9f429394b26721a29b4a6ac14efcc1253c10d3312f5d6ddf90d3832ddc310eea
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links designed to lure users into clicking on what appear to be game hacks or generators. These links redirect to malicious infrastructure, specifically `https://netcdn.online/app/431946152/roblox-arsenal-hack-script-pastebin-game-hack`, which is flagged as a malicious redirector. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

Heuristics 3

  • 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.
  • 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/roblox-arsenal-hack-script-pastebin-game-hack In PDF document text
    • http://itc-nekretnine.hr/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-clothes-on-roblox-without-bc_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-cards-free-cards_GM406889139.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_off000052a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A1 28040 bytes
SHA-256: 8a3918f6d3166cc1f2f4acaee13288ac575b6d0f6ff0d268969248fccc2f3aac
font_01_sfnt_off00009366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9366 3512 bytes
SHA-256: d2fbe445e4228ea2e3d75d3e8f0f84124f9dd8d3d0cf2c6e4e63bcca92f2519f