Malicious PDF — malware analysis report

Static analysis result for SHA-256 5206d81231ed905f…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 05:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 97a893f01ded6bd865e20b55e59900fa SHA-1: 12f1209ce0229dd17722b71f163d85ae3334aff5 SHA-256: 5206d81231ed905f5b875ead2937dc4c1a01b624a4a5be06d1380cdfe01e3c26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document body and embedded URLs reinforce this phishing pretext, aiming to exploit user interest in popular games like Roblox.

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/431946152/hacker-for-roblox-https-meganz-nfpdms5k-q8b-1b9y-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-how-to-enter-cheat-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-meep-city-cheat-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-all-free-stuff_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/games-that-have-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/all-gamepasses-free-on-roblox-gitch_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/devil-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-hack-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-robux-real_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-rich-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-bc-for-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-boombox-script-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-how-to-cheat-on-tycoon-games-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-adopt-me-money_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_off00003047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3047 21960 bytes
SHA-256: 3d902b77db5c9f83570dcbf8fc738e9ca87566fac7d16af4fb391443f2581eba
font_01_sfnt_off00006092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 20744 bytes
SHA-256: 34a410950ac69e0f14d3d07c11d0649811dbf760c4c8549d78b8c2a24727f71e

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