Malicious PDF — malware analysis report

Static analysis result for SHA-256 608f1832767fedd6…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 21:58:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b564a8a5796c9dbd03ffb015c567e2ec SHA-1: 198c577ee03296b09e3ae747b55efb31efda5b12 SHA-256: 608f1832767fedd6c5144f236277c7e584d6a4a110eacaeb1b3be65bbd6f6176
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'Hacks Para Roblox' and contains multiple embedded URLs. One of these URLs, http://netcdn.co/app/431946152/hacks-para-roblox-game-hack, is identified as a known malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting malicious websites, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF's nature and the identified malicious URL strongly indicate a phishing or redirection attack.

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/hacks-para-roblox-game-hack In PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-free-robux-from-a-game_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/xyrex-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-hack-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-free-site_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-swords-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-glitch-5milion-robux-october-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/https-www-roblox-com-free-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/is-it-possible-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-dark-egg-on-raise-a-dragon-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/legends-of-speed-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-hacked-client-download_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_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22152 bytes
SHA-256: e48b9666c32de9fbabb720d0ff611b02f82fa5b416d5eb524663cde0cba1db6f
font_01_sfnt_off00006156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 18808 bytes
SHA-256: 18c04ed6d416389464b421298170c47648070a4b7ff5aa0adb6f039d676fa700

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