Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8c08c82ab4e5ab…

MALICIOUS

PDF

44.4 KB Created: 2021-06-11 09:21:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29d1f8dbeeb30a9f52525af840708fb6 SHA-1: 6b1ea426cbaa129d7360ba2a4cc56a711fc1e218 SHA-256: 0c8c08c82ab4e5ab24ea3f3f2bc8c28168992b4193da16902d7a92c895d65633
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free generators. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-free-admin-for-roblox-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lure users to potentially harmful websites. No scripts were extracted, but the PDF's nature as a malicious redirector is clear.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-free-admin-for-roblox-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-someone-on-roblox-like-anonymous_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/infinity-gauntlet-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-bloxburg-money-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-need-for-speed-cash-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-robux-for-free-com_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pubg-uc-unlimited-free_GM1330123889.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-injectors-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-script-hacks_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
stream_004_off00005089.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5089 25116 bytes
SHA-256: 01e79f9b91afdb54bb0c08b5a91da4d5a02e24b7d2b0b0eab7f275ffeb0edf8e
font_01_sfnt_off00008a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7A 18504 bytes
SHA-256: 5dfc0c8a153057657b914824646d89570d1637690a4d2e47e3b5498d6e8d3374

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