Malicious PDF — malware analysis report

Static analysis result for SHA-256 214b70f78f7c8fb9…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 13:36:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e032519b16cb58cc52a74151d9423b88 SHA-1: fdb671dbe8be3f6bb1ffb7467e4bc63653d9b053 SHA-256: 214b70f78f7c8fb9141d84095dd57881d7f438e38ae5f6b7c2b357dd19eb3743
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes downloading applications and cheats for games like Roblox and TikTok. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect users to potentially harmful sites. No scripts were extracted, but the overall pattern indicates a lure for potentially unwanted or malicious software.

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/835599320/where-tiktok-free-views-apk-download-game-hack In PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-attack-on-titan-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-tiktok-followers-zonder-verification_GM835599320.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-for-roblox-cheats-and-guide-download_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/oblivion-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/cheat-engine-roblox-mining-simulator_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/huong-dan-tai-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-may-2021-no-suscribe_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/cheats-for-roblox-hide-and-seek_GM431946152.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_off00002e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E81 21844 bytes
SHA-256: 702d3ffc6cd894bd10b68662561342645ec3cd37a0a5c7b6fa8aa2899fea7f61
font_01_sfnt_off00005ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF3 19224 bytes
SHA-256: c27ec699a6cb0ddd8f310777bd4f2044b7fb67007ce972061a46a87bc98df196

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