Malicious PDF — malware analysis report

Static analysis result for SHA-256 041a2558a061f891…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 10:46:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63e451d67477938d7d46fda03f86363c SHA-1: a4eaffe74bffe7fea1042fa8bce86cb4bd740369 SHA-256: 041a2558a061f891abf4d7396a679488d32f0b19c0a0f2911348b90949ddd8b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-kid-friendly-game-hack. The document body, though partially obfuscated, also contains embedded URLs pointing to similar lures. This indicates a social engineering attempt to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/431946152/free-robux-kid-friendly-game-hack In PDF document text
    • http://dream-house.de/images/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://dream-house.de/images/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://dream-house.de/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://dream-house.de/images/coin-master-spins-hack-iphone_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004746.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4746 26924 bytes
SHA-256: d84fcd975dcce7641f9a91b662642960dd40811f15e91c403ad322f76fa31e2d
font_01_sfnt_off000084a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A7 18560 bytes
SHA-256: 454f7722b5e362ebb3dfaacf6303323d9fe80b0a3b091af17d82283aff73172d

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