Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d47d4a6b0341f3…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 04:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cbd94e6e30f1b7c2414ac7ffa3bb0e82 SHA-1: d8e54573aa0123b677b2429fd06c8873d9874782 SHA-256: 18d47d4a6b0341f33650a8814f31a15c4186446caf12eb195f4c866c582a60c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to a malicious domain, specifically advertising 'free generator / game hack' lures. The primary redirector URL identified is http://netcdn.tw/app/406889139/i-need-more-free-spins-on-coin-master-game-hack. This indicates a phishing or scam attempt designed to lure users to a potentially harmful site.

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.tw/app/406889139/i-need-more-free-spins-on-coin-master-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-roblox-pin-numbers_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-things-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/robux-free-gg_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-free-download_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-xbox-free-items_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-meep-city-10000-cheats_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-free-version_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-it-meme_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-do-i-earn-robux_GM431946152.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_off0000316b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316B 23100 bytes
SHA-256: a57e68953d99c9affb7bfc06a191c7e8496eceae7995a0804bb7b24c309e4356
font_01_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 18348 bytes
SHA-256: 2261165b7ab8c5223608571b0589221b0e9296972d0056a3971024e6458eec96

Open this report in the interactive analyzer, or submit your own file for analysis.