Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e15c938761fb0df…

MALICIOUS

PDF

35.3 KB Created: 2021-07-09 07:45:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ff21527b4b0f87946a009e7b476a87ef SHA-1: 65f695baa16036dd2d76aba5e1e8ad82432de189 SHA-256: 0e15c938761fb0dff097de1792707c10a4a6e29e5d99fcdf7bc3b32c4c7c0a39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free in-game currency or hacks. The primary link, http://netcdn.tw/app/431946152/how-to-hack-and-get-free-robux-game-hack, is identified as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt, likely leading to further malware downloads or credential harvesting.

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.tw/app/431946152/how-to-hack-and-get-free-robux-game-hack In PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-parkour-cheats_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-free-money-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-hack-into-a-roblox-players-login_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-hack-new-dtfb-test_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-free-roblox-clothing-no-hacks_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-speed-simulator-hack_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-bloxburg-beta-free_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-upload-multiple-music-to-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-is-asking-me-to-free-space-help_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00003092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3092 22924 bytes
SHA-256: 5c290cbf4bd95ecae81a3156c35ba1f80537d404fc5812f79cb06e42e993b6a5
font_01_sfnt_off00006424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6424 19328 bytes
SHA-256: 38bb1ef0d1232593bc33faeb07ab7c9da97d5775ca686b5d0190a8681bcdbe68

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