Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d93a0d5f30051be…

MALICIOUS

PDF

38.0 KB Created: 2021-05-10 13:45:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fde76cded60c8f4a4476ce5ed031f820 SHA-1: a3fca2854bf7216651b36e4ff6652f2c5b4233bd SHA-256: 2d93a0d5f30051be680ec74051f0530315af2615939c8ffc854b8cc69cecee27
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a remote-support lure. 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 0.9624

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/free-minecraft-education-edition-game-hack PDF link annotation
    • http://www.exikom.com.ua/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.exikom.com.ua/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://www.exikom.com.ua/images/mcpe-hack-client_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
stream_003_off00003c18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3C18 24380 bytes
SHA-256: 058d461421ebfd4f0a2723406706cbe994a4f7521bcb8bac375437c66694bc1e
font_01_sfnt_off000073e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E6 18024 bytes
SHA-256: e9a2cf0d2823e90ed2580a45ee363d6e1f35a4f9b450f06c249245a562ddb1b9

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