Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2c951cf7edca9b…

MALICIOUS

PDF

33.7 KB Created: 2021-06-21 12:37:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5c263ee927c697f43b010a7a32174dd5 SHA-1: 6ae2f7beeb8d032bc5abecd268b9eb06f2561caa SHA-256: 3f2c951cf7edca9b53fa09fcf8bed2861c0c563452352175ba5b6f5f1cba0660
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body also contains the same malicious URL, reinforcing the lure. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the nature of the PDF and its embedded URL suggest it's designed to redirect users to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 http://netcdn.co/app/431946152/instalar-hacks-en-roblox-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-inject-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-2021-download-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/real-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-by-changing-the-code_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/pubg-uc-qiymeti_GM1330123889.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/pubg-uc-unipin_GM1330123889.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-a-free-t-shirt-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-vip-server-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/do-those-robux-hacks-work_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-minecraft-for-free-ios_GM479516143.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
font_00_sfnt_off00002e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E01 22280 bytes
SHA-256: 3459bb61e8d86d9313feff759a778615e94b3a9f488d89ce88700b5374735092
font_01_sfnt_off00005f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F43 18760 bytes
SHA-256: 11f4e385e1d6174dcab3bd379b82fa79f98b08dc9ed4205a42e7ec676e3c2433

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