Malicious PDF — malware analysis report

Static analysis result for SHA-256 7810a9d0f19020d8…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 21:55:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ba7f682513b89695372b2dfaa2b75fe SHA-1: acde1235405a962938994877863dce93bc504939 SHA-256: 7810a9d0f19020d8e9a95c28b66971add4351488578f11c3c2f2aa03af5cad42
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 redirector infrastructure, specifically http://netcdn.tw/app/479516143/mcpe-game-hack, which is likely used to deliver further malicious content or phishing pages. The document body and embedded URLs suggest a lure related to free game items or currency, a common tactic for social engineering. The ML classifier also strongly indicated maliciousness.

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/mcpe-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-trader_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/assassin-free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-avatar-free-items_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/pokemon-go-free-8-km-egg_GM1094591345.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/tthye-beeat-app-fo9r-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-crack-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/google-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-r-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-a-roblox-account-still-active_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-hack-2021-real-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-survivor-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-insta-arrest-hack-jailbreak-pastespin_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/mad-shitter-roblox-hack_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_off00002fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDF 22280 bytes
SHA-256: 99c418062cabdebc9146a58ffbcc8e73b90acec9e17d8f705ed5fa399e23e9a3
font_01_sfnt_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 17808 bytes
SHA-256: bb08dbf34a52122f895504de6d0f043fb34325a43da687a59d3db3469e279ba9

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