Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12ff8c4b24f15fb…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 01:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d09e910b3ada29114248de4c193612d SHA-1: 6b12c9b52a39614bdd654feff5390edd84d83d48 SHA-256: e12ff8c4b24f15fbe6c13a51b7a6aa9e46f0f41d8d8a6c4500b02ee5be4a3113
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly indicate a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the lures suggests a potential for further malicious actions like downloading secondary payloads.

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-back-accessories-roblox-game-hack In PDF document text
    • http://chem.ipb.ac.id/kim/repository/best-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-skins-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/cheat-download-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-money-on-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/get-free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-spins-coin-master-2021-app_GM406889139.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_off00002fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCA 22376 bytes
SHA-256: 57ed3fafe9250599456b80dc4f8de79415ccd4b59672fa8eecc1ed7c97141593
font_01_sfnt_off0000615e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615E 18940 bytes
SHA-256: 8a04b7d8a86c5371abb6883ae43cb354396bf9db685deaa35b27b15c7d7e841e

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