Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7f5db8f66b1ce6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 21:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f9363a9f9d47b8cec2d761118acdf15e SHA-1: 5324561028342a99619c74a81ebbc0d3c1886da7 SHA-256: 3a7f5db8f66b1ce6172f9c725f59d909b91cf5cfb77d5861928a88966a852bf5
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-free-unblocked-game-hack. The document's structure and embedded links suggest it is designed to trick users into visiting these sites, likely leading to further malware downloads or phishing attempts.

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/479516143/minecraft-free-unblocked-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/undetectable-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-20217_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-redeem-a-free-code-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-any-roblox-account-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-how-to-make-audio-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-cheat-engine-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-some-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-in-roblox-comm_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-fairy-tail-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/is-it-ileagal-to-hack-on-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/nico-hacker-2-parte-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-hack-million_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-valkyrie-helm-roblox_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_off000031b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B0 22592 bytes
SHA-256: b3550780b9fc0c71fe2df4a81b1c1224b1ba7fb8ab77db1165de3d7176061446
font_01_sfnt_off00006345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6345 18760 bytes
SHA-256: 895a36f5a5f90913cb79adc07e2b796c0bdee1bc761bccd5f30adeaa4bf49632

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