Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b9a70e192936151…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 13:37:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b01e1b197c9164973548bf4f5da3283d SHA-1: 165e4ede95a5d8a92728fca7db281fd010119581 SHA-256: 9b9a70e1929361515f9adae123676c41844899ad5c2d5c3635fb9a57c8be8e61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to trick users into believing they can obtain free in-game currency or hacks. These links redirect to known malicious infrastructure, specifically a URL associated with a 'free Robux' generator. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/431946152/free-robux-no-verification-2021-ios-game-hack In PDF document text
    • http://www.fluidtech.hu/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000320a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x320A 28804 bytes
SHA-256: 0c2f0dd715916ba0514bc49872fdf48afeab5374b016e34f2a01c4b41d2975ab
font_01_sfnt_off000072aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AA 19004 bytes
SHA-256: 57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8

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