Malicious PDF — malware analysis report

Static analysis result for SHA-256 567d4172f5bc8db0…

MALICIOUS

PDF

36.5 KB Created: 2021-07-06 08:11:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9d54d7dcf34d5e5e233a7a12986944e6 SHA-1: 244ab89bad1512e0bbbc2696f455aefc69bffd64 SHA-256: 567d4172f5bc8db0993efed40cabc919cc48992aa12927bd7b5da8f8ed008df3
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 what appears to be a free generator or game hack. The primary link redirects to a known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded links suggest a focus on in-game currency or cheats, a common lure for such attacks.

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/free-robux-generator-no-human-verification-or-survey-2021-game-hack In PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-cheat-in-minerh-eaven-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-tix-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/pubg-uc-buy-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/ninja-legend-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-no-human-verification_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_off000031a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A9 23564 bytes
SHA-256: 8c608a16a0f16c8c0fda7e8dbb69b13071554c1f0e6c8b3fa01d5ee716d17904
font_01_sfnt_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 20028 bytes
SHA-256: 862718f3553914d13e7050f30ddf7e0bf5fdf78324d2cf1d5c4be66b223f3a80