Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6a3be94b50bf579…

MALICIOUS

PDF

33.8 KB Created: 2021-06-18 02:50:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 42ee3677fca2d2a2aba001eb61951111 SHA-1: 0140c3b47432bc5143fc3195c358f8777c8402ac SHA-256: b6a3be94b50bf57943e341863d902a695027bb320be1766cef8dc1516bbe8e36
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, disguised as a game hack or generator. The document body explicitly mentions 'Prestonplayz Roblox Account Hacked' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a lure to trick users into clicking the malicious link. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/prestonplayz-roblox-account-hacked-game-hack In PDF document text
    • http://www.e-lysis.com/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/pubg-uc-price_GM1330123889.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-free-items-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/robux-hacks-computer_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/is-minecraft-bedrock-edition-free_GM479516143.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_off00002e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2C 21544 bytes
SHA-256: 1414f4089d5b7fedab0dcc737cbe2142b9f3061e7d9c34c8577e3ea2d25899a4
font_01_sfnt_off00005d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 19480 bytes
SHA-256: d1796a20228e20a59cc01a27e90dc99192d86a858b33edf5067980cdd4b29ca8

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