Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ac18a018db2ef8…

MALICIOUS

PDF

36.5 KB Created: 2021-05-20 21:08:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: eb1a242ef8e7011ac7129c3798d304b7 SHA-1: 08fed4fbc5ad2df4f6dd41d0fe55826cf71d012c SHA-256: f3ac18a018db2ef89ee10b0b1758eb4fa66b4fca830343440bed665f477a7d1a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and other PDFs hosted on suspicious domains, all masquerading as game-related generators or hacks. The document body and heuristics indicate a lure for free game currency, likely leading to further malicious content or potentially unwanted applications. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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.xyz/app/406889139/coin-master-free-link-today-game-hack In PDF document text
    • http://libertad74.com/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/monttechscom-coin-master-free-spins_GM406889139.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_002_off00003339.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3339 25176 bytes
SHA-256: c92139c61696f96eb1b6acbb10bf6f93c38d57c0650f0e96ba7105be3cb4a633
font_01_sfnt_off00006d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6D 18232 bytes
SHA-256: ac7637c34b6ea6a17139aeea995219f6842183aaecfc204fce9d36f337c74847

Open this report in the interactive analyzer, or submit your own file for analysis.