Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d965312f7a2188…

MALICIOUS

PDF

33.9 KB Created: 2021-07-06 14:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0345f84f85e4786f5bc93e90635a9244 SHA-1: f2cebe53b06d71a6823ecbc43082652783e9b9a3 SHA-256: b6d965312f7a218847842dbca2e0b3783655566c5400955399321128456b8687
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 a known malicious redirector. The document body and embedded URLs reinforce this, indicating a phishing attempt to drive users to a malicious site. No scripts were extracted, but the overall pattern suggests a social engineering lure to a potentially malicious download or exploit 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/479516143/is-minecraft-java-edition-free-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/bitcoin-mining-simulator-roblox-hacks_GM431946152.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/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/without-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/boga-boga-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/como-hackear-roblox-para-tener-robux-2021-pc_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-hacker-mod_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/robux-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-roblox-birthday-printables_GM431946152.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_off000030c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C8 22416 bytes
SHA-256: d0eb95dd39238ed7a50b331e3aff78d1f62c0b6cd228f0e17aa70523bb036cff
font_01_sfnt_off00006148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6148 18452 bytes
SHA-256: 31a4a06d9fb355d17720bdbd4e924d787a36c109291985566279346bb5d94ffc