Malicious PDF — malware analysis report

Static analysis result for SHA-256 606d3885f7a9bf08…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 21:43:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2d64a87024bd4cf86d265dabc6166b2e SHA-1: ac42955d6ce828d1ec02f0e1d0eda5752e9ee5cc SHA-256: 606d3885f7a9bf0854131a123fbcf928f286a4b3fea1f174e9f37853f59d51a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body explicitly contains the URL http://netcdn.tw/app/406889139/how-to-block-someone-on-coin-master-game-hack, which is also flagged as a malicious redirector. This indicates the primary purpose is to trick users into visiting a malicious site.

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/how-to-block-someone-on-coin-master-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-hacks-pasldfopasfksofmnj_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-email-no-download_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/customize-your-roblox-character-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-hack-tools-no-virus_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-make-a-free-shirt-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/jojo-s-tops-free-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-accounts-2021-with-obc_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/cheat-for-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-hack-com-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-jailbreak-cheats-noclip_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_002_off00003078.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3078 22220 bytes
SHA-256: f9fd7b821ed8f5654af24afb120be92aebec8b3cd75eb5f7216ded0d51da2712
font_01_sfnt_off00006190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6190 18716 bytes
SHA-256: dc2aca6796f2c3277543009f3b518ac3286807ed27c41d74326e2a2879575f3b

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