Malicious PDF — malware analysis report

Static analysis result for SHA-256 e38494c8dd799d45…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 12:11:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1b43976b439cb1cb012a44aac1b92450 SHA-1: 37c048f3a4eee4f2835de16d6eda8c7317668057 SHA-256: e38494c8dd799d45e0200e0aff21d1eb60ff25e6163f6753dc920c40c146a0c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to a "free generator / game hack" lure. The document body text reinforces this theme by mentioning "Roblox Jailbreak" and "Robux Generator". The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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/431946152/how-to-hack-roblox-jailbreak-game-hack In PDF document text
    • http://library.atim.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-for-roblox-csgo_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-the-lords-of-nomrial-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-saiyan-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-robux-using-cjrom-web-store_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-use-cheat-engine-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/calliu-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-guess-the-character-cheats_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-no-human-verification-or-survey-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-robux-no-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/is-getting-free-robux-illegal_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-mod-menus_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-2021-fly-hacks_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-how-to-sell-t-shirts-for-free-reddit_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-free-tips_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_off00003144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3144 22580 bytes
SHA-256: fdf4f7cde9ced41b0cd454ce275aa169146571605b816a1571b0d12b3b26a9d8
font_01_sfnt_off000063d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 19104 bytes
SHA-256: 696a7a1a31584406119b272d138aa3833d155dde635b1dee8888fecfa5e4f887

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