Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e308f2088f09de…

MALICIOUS

PDF

53.2 KB Created: 2021-06-03 13:17:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 029fa03f6f376b3866bda0fff536ca5e SHA-1: 4bb804db93c1cb93d116ced04917b9928da1c1cb SHA-256: e3e308f2088f09de826b599daab5dacb7d10cbbebedea0427dd26b62c6e42d70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector lure, specifically targeting users interested in game-related 'hacks' or in-game currency. The document body and embedded URLs point to a known malicious domain designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9607

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 https://netcdn.online/app/431946152/free-robux-no-offers-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/pubg-5-uc-buy_GM1330123889.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5438 28820 bytes
SHA-256: c9a270b46582022406ac3af8232596389af85c80b16fa8f75761f462de16e81c
font_01_sfnt_off000095f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F4 3400 bytes
SHA-256: 75c3a8e6f5c68e0746f893c922e57fd7e888a21fb038f9ae3eedb0a197a59e24
font_02_sfnt_off0000a113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA113 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000ae25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE25 18012 bytes
SHA-256: db6be32425767485114cb9000642ed63280f0807e0fe45793765b8e181fce2c0

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