Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2fbb7cd781fe59…

MALICIOUS

PDF

34.5 KB Created: 2021-06-21 17:21:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d13fd94bee511e4e57a59add52df2ad5 SHA-1: 31ab8c946f524040cfc8a26ca5c1796642580fce SHA-256: 2f2fbb7cd781fe596954b615d488a8a17a5e9f1a6bc93dcfacb84307c0ad36ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure for free game cheats, which is a common tactic for distributing malware or leading users to phishing sites. No scripts were extracted, but the primary attack vector is the malicious 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-hack-free-no-download-game-hack In PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/pastebin-com-robux-hack_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/10k-likes-on-tiktok-free_GM835599320.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/can-you-get-robux-for-free_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_off00003019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3019 22000 bytes
SHA-256: 35e83f6f01613aa256433f7dbc4b905dfee4e2557b654f3c8010160fe80ae7c1
font_01_sfnt_off000060cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 19328 bytes
SHA-256: f01e55520d8b99a9429d396d9d1fddbcedfd3daf44ca08769f7e219f750d79fb

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