Malicious PDF — malware analysis report

Static analysis result for SHA-256 44c208602f0a7b6d…

MALICIOUS

PDF

47.6 KB Created: 2021-06-10 23:17:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b02024690de3d1768ce6c07a03fc52e5 SHA-1: a17c7e87d44a64e17ad7b45a5fef09227adbacb8 SHA-256: 44c208602f0a7b6dfd54fd20b5517c2cdcd48eab882f36b70e2098e6812e344d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or 'game hacks'. The embedded URLs and the heuristic firings strongly indicate a social engineering lure designed to lead users to potentially harmful content or further malware. No scripts were extracted, but the document's structure and embedded links are sufficient to determine its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/uirbx-club-free-robux-game-hack In PDF document text
    • http://force-seniorklub.dk/images/free-robux-generator-2021-without-human-verification_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-robux-by-pressing-g_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-hack-xbox-one_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-cool-shirts-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-games-that-cheat-engine-works-on_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/cb-ro-hack-roblox_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-rs-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000506b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506B 26680 bytes
SHA-256: afbde7a62ce70572a17933bcfce61289d1c518a5b570ea0d43370f850c77cbf8
font_01_sfnt_off00008d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9D 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off0000973d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973D 18396 bytes
SHA-256: 84f625030a7f1f5286ae58a22daaf46a91611d6c747ac63487c4b5e2dd74d257

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