Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a1c10750d6022c…

MALICIOUS

PDF

47.0 KB Created: 2021-05-16 08:51:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f3fcd881834a254f222761b9e9b9927d SHA-1: 3fa9121c0e054c1cc0f08b8f913f1154c16e164f SHA-256: 11a1c10750d6022cd4a7d88b6b9c0f412a975fd73d42aaa73a0f639da241920e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is 'https://netcdn.xyz/app/431946152/how-to-get-a-refund-on-roblox-2021-game-hack', which is designed to trick users into clicking through to potentially harmful content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/how-to-get-a-refund-on-roblox-2021-game-hack In PDF document text
    • https://www.devries-group.de/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/install-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-daily-free-spin-and-coin_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
stream_003_off00004c17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C17 26400 bytes
SHA-256: dc88682af76405b7f21615140d97643889839b2137c5fa0f95dc265780a6e8df
font_01_sfnt_off00008894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 3084 bytes
SHA-256: 4889dc98a6bfd3c9244583f92387be58625a91e7a969778ad35ada89b27ed636
font_02_sfnt_off0000933a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933A 18768 bytes
SHA-256: 0b2b543da48f0b4768de5070e2e01aa670dd6acf1529f0922c00d776e6787c6f

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