Malicious PDF — malware analysis report

Static analysis result for SHA-256 71505b69f7e5df37…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 18:58:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac00a4f28500196c7530b38b7732d508 SHA-1: b75cf14f9af2c116120231329dec67d75068fcf7 SHA-256: 71505b69f7e5df372ac5a49f5a7f3d530753916d30926c28caaf53370bce72e6
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 a phishing or scam attempt. The primary URL, https://netcdn.xyz/app/406889139/coin-master-fb-free-spins-link-game-hack, is likely intended to lead the user to a malicious site. While no scripts were explicitly extracted, the ML classifier flagged this PDF as highly malicious, indicating potential for embedded malicious JavaScript or other exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-fb-free-spins-link-game-hack In PDF document text
    • https://itv-grabungen.de/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-person_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-without-human-verification-real_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_003_off000048a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A1 26780 bytes
SHA-256: 08dbffc989263016d104e5f60931505fc6eb7d477c7e1b8ea9bdbc23136ed394
font_01_sfnt_off000084df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 18212 bytes
SHA-256: 327fc99e7b5c2067b4ecc0387a10766c92f977f0ec9955a16f9230cf80a034c4

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