Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb0742941e8f9d8…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 08:55:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 54fc74cd106df3e8dc06b0be2aca7c3d SHA-1: 300eb180996b9870a6976bc0bfb0e53ef9aaa1e8 SHA-256: dfb0742941e8f9d8ec9364d89193775c229ef4b7e68ca125f56a32bbce7be0d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and in-game currency. The primary lure appears to be related to Roblox and Coin Master, with the document body containing obfuscated text and URLs pointing to these themes. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks.

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/hacker-roblox-picture-game-hack In PDF document text
    • http://library.imz.or.id/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-quick_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-i-have-free-wifi_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/ideos-para-hackear-roblox-cuenta_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/sign-up-today-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off00002fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE2 22780 bytes
SHA-256: fdd343c019efb4b9de1abdfcb9ea3c92aec59af2aa58edb28a5ddaaa73096a9c
font_01_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 19176 bytes
SHA-256: c4f219090734c22e685040505e7290f7e3358048ec04acaf42e2802829c59448

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