Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b62a36fba34fb4…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 15:34:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 79e7425966638ddc75c5bbea368c01b2 SHA-1: 3f44b155f03701d6b57d948d22f4beae345d1ef7 SHA-256: 65b62a36fba34fb4585ecc0cc4e56b074e7dbb72e424d68fd4ee6e0c8990de37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users. It contains multiple embedded URLs, including a primary redirector at http://netcdn.tw/app/479516143/games-like-minecraft-but-free-game-hack, which is flagged as malicious. The document's structure and embedded links suggest an attempt to lead the user to potentially harmful content or further malware downloads.

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/479516143/games-like-minecraft-but-free-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/how-to-make-anything-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-cheat-engine-detection_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/tiktok-free-hearts-hack_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-any-codes-give-u-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/gears-online-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-codes-that-nobody-have-havent-used-yet_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/glitches-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/jailbreak-roblox-free-money-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-someone-hack-you-if-you-report-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-that-actually-works_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_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 21828 bytes
SHA-256: fe85dc0116122650c2f48fa6c45ba9ed5948fad8edc145fac2a255d5416a153d
font_01_sfnt_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 18644 bytes
SHA-256: 45333c73372c7943a74bef752753338b098f9514411db91a74ac505656791b6d