Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee4ffe854063f03…

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 05:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 108b1f365d52951c985da2d0641c3b90 SHA-1: 55b2a1dabac0f61e49ee0f55a56e0be564be8867 SHA-256: 8ee4ffe854063f03e4fa5649ffe85ad93f88c6d252050806f81e638bdaba1581
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors, specifically advertising free game hacks and generators. The document body, though partially corrupted, contains similar lures and URLs. The primary malicious activity observed is the redirection to potentially harmful content hosted on netcdn.tw, likely serving as a gateway for further exploitation or malware delivery.

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/479516143/is-minecraft-free-on-pc-game-hack In PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-counter-blox-wall-hack_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/cheat-mode-one-punch-man-roblox_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/pokemon-go-free-evolve-with-trade_GM1094591345.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-athoi-admin-hack_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-points-free-robux_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-pilliow-simiulator-free-pillows_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/shirt-ash-on-roblox-free-on-shirt-free7_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/como-hackear-roblox-en-android-sin-root_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/latest-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-code-generator-download-free_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-gtv-in-roblox_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-hack-god-simulator-roblox_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_off000034fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34FD 22512 bytes
SHA-256: 9e697ca838a7a1d86b3d72fe3001d053930bc51000eb466b676a43730feede86
font_01_sfnt_off00006744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 18008 bytes
SHA-256: 62c66436bb3dd1aa34ea3ada0f014b29f352d4dd73dc7e13f71f1bd631277ac3