Malicious PDF — malware analysis report

Static analysis result for SHA-256 763170217ff8acdb…

MALICIOUS

PDF

47.7 KB Created: 2021-06-07 23:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c0c0dcccd3304c31ed7462e259234b9 SHA-1: 7f92ab052aba4eed55d63349c463226c8f9d8d56 SHA-256: 763170217ff8acdb1d99c1318f8784dc80195646360068622336e8493f4addb4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free generators to entice users. It contains a critical link that redirects to known malicious infrastructure, which in turn points to other malicious PDF files. The ML classifier also flagged this document as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/roblox-iphone-hack-game-hack In PDF document text
    • http://yogaschooldecypres.be/images/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/pokemon-go-free-metagross_GM1094591345.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-snyapse-free_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/roblox-person_GM431946152.pdfIn PDF document text
    • http://yogaschooldecypres.be/images/coin-master-50-spin-link_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000503c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x503C 25820 bytes
SHA-256: f14d4f2d3049b17e38022eccc04d39b2d4d1ceff9d54b367f15ec0341e717483
font_01_sfnt_off00008a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A90 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off00009718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9718 18524 bytes
SHA-256: dc889f45492d7d96f79e771281fa2bea38da1910261e447c2ce7bfe4ded6768a

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