Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d3fb738d1cc48b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 06:47:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34c0e94d5c2ba38fad78678057072f1d SHA-1: 4cc77ed2ec1b783054e3467e35103a44c2d34389 SHA-256: 27d3fb738d1cc48b62931634c4e3832a0b2f9bbf0e5de7062a4d4fc9d996df88
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/united-gaming-net-coin-master-hack-game-hack. This redirector is likely used to deliver a second-stage payload or lead the user to a phishing site. The document's content and embedded links suggest a lure for game-related cheats or currency, a common tactic for malware distribution.

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/united-gaming-net-coin-master-hack-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/jack-hack-robuxcom_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-the-green-dragon-wings-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hoow-to-get-robux-no-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-the-egg-in-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-giveaway-group_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/im-gonna-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/one-piece-millenium-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-hack-no-download-2021_GM431946152.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
stream_002_off0000313b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x313B 22524 bytes
SHA-256: 8b86d12acce441db767e36982ef3e5133590521f22df683ff391671bbd1d5f82
font_01_sfnt_off00006350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6350 18624 bytes
SHA-256: fd91004ccc7853650b7b911b20124dd64b820294025c290f6f55d75747c8a01a

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