Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3890f7fe40e1c1…

MALICIOUS

PDF

49.4 KB Created: 2021-06-10 17:43:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 51b335acbfdbe921ad25eb0126c0f157 SHA-1: 6824c43578034b02815f2fd49f301bddfb2dda33 SHA-256: 0d3890f7fe40e1c1e394904693d6905ec1da10cc165814facb3a905b387a6653
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/cheat-roblox-phantom-forces-2021-game-hack In PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-much-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/pubg-uc-lucky-spin_GM1330123889.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.man1tapteng.sch.id/__statics/gudangsoal/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000578b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x578B 25604 bytes
SHA-256: 21d26d4458d3df4ad48c1fc4184aad195f9fd5ec1519a80b1e604440c8fd30dc
font_01_sfnt_off000091cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91CC 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8E 19260 bytes
SHA-256: 88e1a7cfa8e4863d2a6fc5b6db6408531672b268fa7db3131656b8f0ab83bac8

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