Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0b598ded7311aa…

MALICIOUS

PDF

49.4 KB Created: 2021-06-07 18:59:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bec7f7c624c47c3e8d5212aaa4fea165 SHA-1: 885aba39324bdde40b011f87a88c8e028478f792 SHA-256: ea0b598ded7311aab4e87961882a7ac3b6cb581db673141c46e295bcc161d720
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/free-code-for-huge-cat-pet-in-roblox-game-hack PDF link annotation
    • http://schrichte.de/images/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/roblox-how-to-make-a-gamepass-free-for-someone_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/roblox-rape_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/pubg-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • http://schrichte.de/images/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://schrichte.de/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/free-robux-no-password-required_GM431946152.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • http://schrichte.de/images/how-do-you-get-robux-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F8 26392 bytes
SHA-256: f81f483df28dfceb56c5ef385437597f8d7a55475427e32d75d44b3c196ad9c2
font_01_sfnt_off00008f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2A 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009c3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3C 19036 bytes
SHA-256: 2501d25ab6a0fa45cff657ab914d775960c1d5d7136aa542218c329f77996e32

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