Malicious PDF — malware analysis report

Static analysis result for SHA-256 d080b268b6e77b43…

MALICIOUS

PDF

41.1 KB Created: 2021-05-16 08:55:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b59e50b67cf7f69a1aa31e5c8655578 SHA-1: a4d95776425b1592f299b79e9ad49d2c3f16d519 SHA-256: d080b268b6e77b437bc6641654224b48123b25e9234f391a35fcc1c46ecee30a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and generators. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-generator-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to potentially malicious sites.

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-free-generator-game-hack In PDF document text
    • https://gryps.de/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/wurst-112_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://gryps.de/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://gryps.de/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://gryps.de/images/coin-master-spin-free_GM406889139.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_003_off000046d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46D5 24856 bytes
SHA-256: b0222481c0a27213752cb9134195eb28cb085d5949499331ff365f35e3096f92
font_01_sfnt_off00007fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC6 17712 bytes
SHA-256: f6b7bbb27796bfdd91832c5c9631b2ef3c604ec4967bc220e21b541acce31e79

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