Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4553092a20917d…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 00:29:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 03df632f2387eed5617e823733a45d34 SHA-1: 6b4ddc5b64dec39a626a442358fce761f03ad078 SHA-256: 9e4553092a20917d9691a1a5bfdb0bb773b4c6011efc4d820e4121292e1ec109
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/835599320/is-tiktok-free-to-install-game-hack, is identified as a malicious redirector. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/835599320/is-tiktok-free-to-install-game-hack In PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-how-to-get-rubux-hack-free_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-free-robux-without-downloads_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-roblox-scrach-ins_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/wwwfreerobuxroblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-roblox-gift-card-codes-2021-september_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/robux-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-free-admin-commands-in-roblox-superhero-tycoon_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-jailbreak-cheats-download_GM431946152.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-hack-no-verification_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
font_00_sfnt_off00003149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3149 22776 bytes
SHA-256: ad8d113027008ba5a32a307ace9315292291cd2d534085bd7c6cfde46b385d98
font_01_sfnt_off00006483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 18048 bytes
SHA-256: ba1f4695c01dbe39b40d839ace0105a90400d48359497159d86773b20d83fea5

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