Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda923120354fea2…

MALICIOUS

PDF

46.5 KB Created: 2021-06-07 11:10:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 33f7036dab44be7fb1c13585417fa492 SHA-1: a25b915223bbfbb0bbb3b244e3edc5ea9c6b3aad SHA-256: eda923120354fea2553ff02afb9a4f400d4a2e0ebfa2f5b0d4014a0d905487c6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'codes-how-to-get-free-robux-game-hack', which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/codes-how-to-get-free-robux-game-hack PDF link annotation
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://www.thecoffeebaron.co.za/images/how-to-hack-someones-roblox-account_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
stream_004_off0000536b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x536B 28276 bytes
SHA-256: 41be1299e92c43d80253babf6d139884fd19b54f0a9a63c242c0338e7be0b00f
font_01_sfnt_off000092e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E2 18456 bytes
SHA-256: e7ed60d24a78ba6057de20e743a58d73d760a91b60c41324c250f3bd6f119d62

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