Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e5ea01fd4a4faf…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 09:30:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2c1eefcb0a3421c2d9cba9ec09d9cbf5 SHA-1: 56c605a756f9d9927843c6f1e7b8e88f50056106 SHA-256: e5e5ea01fd4a4faf3e4fd608b12cc3568b9df9b4e034709efbf4ca00ebcc69e5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary lure appears to be a 'free generator / game hack' for Coin Master, directing users to the URL http://netcdn.tw/app/406889139/free-spins-coin-master-2021-today-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-spins-coin-master-2021-today-game-hack In PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-go-through-walls-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-tiradas-gratis-link_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
stream_002_off0000316e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x316E 22876 bytes
SHA-256: 79c7946bfc6c098c15cf55df6b8a7df52e189e4512064ca9ee25a5ca4660b427
font_01_sfnt_off000064ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 18928 bytes
SHA-256: dadcf5174bb2e6041b94f83e832c5e3e9a18ba888fbfa9b44f22d907c203bba1