Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c8c6b9e693c742…

MALICIOUS

PDF

33.1 KB Created: 2021-07-05 23:54:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: becc6275f0f33c58a404428e27386119 SHA-1: 045261758ead367d22336f68130f8e4dbeae887a SHA-256: 27c8c6b9e693c7420da8f3dc18313cd9b877cfdebba14add4a0c21d309efd933
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, one of which, http://netcdn.tw/app/406889139/get-coin-master-hack-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for a 'game hack generator', suggesting a phishing or scam attempt to redirect users to potentially harmful content. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing attack.

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/get-coin-master-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-not-get-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-dragon-ball-super-2-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-de-robar-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-two-floors-on-roblox-blox-burg-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/youtube-free-robux-2021-bluebig_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-jailbreak-redboy-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hacking-prison-life_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-vip-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-white-hat-hacker_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/29-500-robux-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-redeem-code-free_GM479516143.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_off00002da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA4 22304 bytes
SHA-256: 8a102f006790c29820d46db6d2db52b1c67b62d7411243a32169e0ce8d990d37
font_01_sfnt_off00005f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F66 18004 bytes
SHA-256: 973020597ec4509ada4873629b443df7e4e2bd9aab6e332d99193b91c18a1b73

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