Malicious PDF — malware analysis report

Static analysis result for SHA-256 5571337323ed89ea…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 02:30:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b6159f3a58a5d1129ae492cefa835db1 SHA-1: 24259d6798bd8c856ef20b90f4a8d964f518aa6f SHA-256: 5571337323ed89ea5bb7332c3ec330b429bc83b20aace02dddb30ef533f371aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this by referencing free generators and hacks. While no scripts were extracted, the PDF's structure and embedded links strongly suggest a phishing attempt to redirect users to potentially malicious content.

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/406889139/coin-master-free-spins-link-deutsch-ios-game-hack In PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-robux-no-hacks-or-virsus_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coins-master-hacks_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-roblox-admin-script_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/tiktok-free-4k_GM835599320.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/neruc-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/robloxgainer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-hack-roblox-games-on-mobile_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-app-free-download_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-hack-roblox-jailbreak-beginner_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-2021-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-use-a-cheat-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-obc-on-roblox_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
stream_002_off00003109.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3109 22440 bytes
SHA-256: 132d337a775d1d5f2374d870665a15e66a61b66b7e4c628e10a652a8d2451ffa
font_01_sfnt_off0000632a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 18820 bytes
SHA-256: 0df7f73f5dc751554d445504aa4a2634324aac68e74bdfd62cfd74053bcb9575

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