Malicious PDF — malware analysis report

Static analysis result for SHA-256 317fe2e3ec08b605…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 07:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d48cbc65a1262b7560ed7b83091e3fca SHA-1: f866650b29afdac03d93dfea26810c3c90dbe982 SHA-256: 317fe2e3ec08b6052baae8775dcdf2ea3ed067642363629ad7cb043a11d8d3a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector hosted on 'netcdn.tw', which is flagged as malicious infrastructure. The document body and embedded links suggest a lure for game hacks, specifically mentioning 'Mcpe Master Coins Hack'. The presence of embedded URLs and the overall structure indicate an attempt to trick the user into visiting a malicious site, likely to download further malware or engage in a scam.

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/mcpe-master-coins-hack-download-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pokemon-go-free-150_GM1094591345.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-gta-5-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-easy-for-kids-fof-noobs_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-hacks-legit-no-survey_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-surveys-or-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-project-pokemon-free-pokemon_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-cheat_GM406889139.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_off0000301c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x301C 23156 bytes
SHA-256: 67c961cdfa272a0fa0f40667739c5fc12a5bd60d0f276d7e34aee6d4a029149d
font_01_sfnt_off0000641f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641F 18760 bytes
SHA-256: 93fc94ff110dea710e3ee865284d852034112e769a37521f21bc5dae599cf803

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