Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08f96edc15368c0…

MALICIOUS

PDF

48.4 KB Created: 2021-06-11 05:49:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b43bb4d4188c76ea826bcd8536e84da SHA-1: 05868024001c0ac6052d40a2902a6f729ecacd33 SHA-256: c08f96edc15368c0d69756d00dfc2080ed6f5b508a25859b7910806508c5695a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The document body and heuristic firings confirm this lure-based approach, aiming to trick users into visiting the malicious URL. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, suggesting an initial access vector via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-robux-method-that-still-works-game-hack In PDF document text
    • http://www.art-concept.gr/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://art-concept.gr/images/free-robux-generator-roblox-game_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-exploit-dolphin-hacks_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/is-there-anyway-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-working-strucid-aimbot-hack-2021-august-pastebin_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/robux-hack-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-is-bieg-hacked_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/free-swords-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-drunk-walk-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.communes.comIn 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_004_off00004fd1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD1 25796 bytes
SHA-256: 33927b20bcdfcbbd7663a771580e9040cd897bac459ddf6168d89d782483259c
font_01_sfnt_off00008a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A14 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9726 19444 bytes
SHA-256: 2d384df9586bd3ecd44a991843a60c17af44e18ae563f2b57998b47fda1401e0

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