Malicious PDF — malware analysis report

Static analysis result for SHA-256 b11cf2eb9446046c…

MALICIOUS

PDF

35.6 KB Created: 2021-07-06 03:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2834a1a98a65546618b2c6d0c64e8d69 SHA-1: fd86eac743d69dfd87f51ec7f42e4dce6f2cccc6 SHA-256: b11cf2eb9446046cfeee2ea5a81569bab333f78f54b220eca6b845495d7cb49b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic identifying one as a malicious redirector. The document body and heuristics suggest a lure for game hacks, specifically directing users to 'http://netcdn.tw/app/406889139/hack-my-game-xyz-coin-master-game-hack'. This URL is flagged as malicious and part of a redirection chain, indicating an attempt to lead the user to a potentially harmful site. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or redirection attack.

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/hack-my-game-xyz-coin-master-game-hack In PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-tablet_GM431946152.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/who-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/how-to-get-bc-for-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/have-i-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/pubg-uc-whatsapp-group_GM1330123889.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • https://www.elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1bukittinggi.sch.id/__statics/gudangsoal/files/roblox-menu-hack_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
stream_002_off00003190.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3190 23616 bytes
SHA-256: 7256182a30131098a37e68ed67f6dde53886f013f0d3c6efd465284ee41e4d77
font_01_sfnt_off00006733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 18752 bytes
SHA-256: 33b0ae4fa0c3e15354cdf46e051c8113c77c51e768fec96c29798f0c17eafa1d

Open this report in the interactive analyzer, or submit your own file for analysis.