Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c84fc1ff2971d96…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 10:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f5cf63505c2b9c8c460136b68b7711e9 SHA-1: 0e833e5fb66e387c55ad1558eca9e9bb4199c646 SHA-256: 4c84fc1ff2971d966f907e800a699c64e553a2ae39679b952c39c313cd98e7ce
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.tw/app/479516143/minecraft-game-hack. These links are presented as lures for game hacks and free currency, indicating a phishing or scam attempt. The document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites, likely to download further malware or engage in fraudulent activities.

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/minecraft-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hacking-script-download-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-assassin-hack-knives_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-can-i-get-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-hacking-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-minigun-in-roblox-human-vs-zombies_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-750-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/admin-commands-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/promocode-on-libery-free-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-mad-city-roblox-easy_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.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_off00002fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD7 22296 bytes
SHA-256: ada27bac6bfcc711454fb0cd1113b241440721ba2e875924775e9bc2ab20c1a8
font_01_sfnt_off000060f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 17856 bytes
SHA-256: 18153eb78e52d10f573a403757bf08b8b042ff0dae7dd3b4cc440df27f37a65e

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