Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db0b56629d92360…

MALICIOUS

PDF

44.8 KB Created: 2021-06-04 02:57:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7557b50cb86e3b92154bfc0c69f47da SHA-1: f8ddf5e5ae818614c1af0a74fa124c2e36d4fe9c SHA-256: 5db0b56629d923603d64459616aa91639bfab2a5f92ef699707dd62ed40ddb6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual call-to-action, strongly suggesting it is a lure for downloading a second-stage payload. The ML classifier also flagged this PDF as malicious. The primary URL, https://netcdn.online/app/406889139/free-coins-coin-master-game-hack, is likely the download location for the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/free-coins-coin-master-game-hack In PDF document text
    • http://library.smpn2-byl.sch.id//repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/gladiator-simulator-strength-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-roebucks-com_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005111.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5111 26596 bytes
SHA-256: 48507f979f769c9a234275b1eb993065708d5404a8b74108bf97c55b1193ac57
font_01_sfnt_off00008e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6C 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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