Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ec9caea0e434ad…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 22:38:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 291cf9dd5e19cc4715da36faad0c6475 SHA-1: e0dec3da2fba0bd725e11d3b05b51a29eb60bd8a SHA-256: b8ec9caea0e434adba10fa8419d1ff7f33eb0cf799efc5ce483c873e717d1a43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' for Roblox. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were extracted, the document body and heuristics indicate a phishing or scam attempt designed to trick users into visiting malicious sites.

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.co/app/431946152/god-mode-hack-roblox-download-game-hack In PDF document text
    • http://gts.edu.gh/library/repository/hacked-text-to-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/blox-awards-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-vehicle-simulator-money-hack-download-script_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/zyrus-12-roblox-hack-exploit_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-vip-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-play-paid-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-201-exploit-free-lvl7_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-clothes-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-the-coin-master_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_off0000315c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315C 22264 bytes
SHA-256: 615a8c12a03671979b043597fd46eb162d2b392a0a7803d08844c4263bfdfe95
font_01_sfnt_off00006298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6298 19360 bytes
SHA-256: 19efa6cab0af3e1923cb976566fc43062e78dac5718c7d10a1cc68d38d7cfbe9

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