Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03764dee87abd51…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 05:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 53ce8778ac13ad981692e5510c42a2ee SHA-1: 3ff4b1230d81b319f28846d1a2d8b773f88dce8f SHA-256: c03764dee87abd510f4ade77e4e509fa96b23918a8eb595015525e2a80216726
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a social engineering attempt to trick users into downloading or visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

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/best-free-spins-for-coin-master-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-677_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-game_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00005128.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5128 24904 bytes
SHA-256: 790e75c8a3f12ec193a607a4008a704819f8a468c87f973341c55c430a0549a3
font_01_sfnt_off00008919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8919 18104 bytes
SHA-256: 265810a533179ed4911351fbf1b80b3cb768f85036b1ca3bcdd0395585e16b03

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