Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda05285a700391b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 10:11:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 35b26debc54d6e5233082940209ef276 SHA-1: 4c0a006fcae06e9a9f251b6b28701022493f97d7 SHA-256: fda05285a700391b88d80ccb50b58351c1726572f5fcee1e452417ee9d89e996
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/roblox-lawsuit-game-hack. This infrastructure is used to lure users with promises of game hacks and free currency, likely leading to further malware downloads or phishing pages. The ML classifier also strongly indicated maliciousness.

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/431946152/roblox-lawsuit-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/kostenloser-roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/spin-link-coin-master_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/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-any-item-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/op-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-hack-app_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/tradlands-roblox-cheats-tricks_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/descargar-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-stop-people-from-hacking-you-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA9 22296 bytes
SHA-256: 57300d26a6d53300af557760a0cb41961a260a482e05f28b5b537d2d56baeb98
font_01_sfnt_off00006016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6016 19012 bytes
SHA-256: 1830b5f3a60995681640ecb4d01816c6a21ce14ac617c8c2785f241c9e2b91f3