Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cbee272d0459694…

MALICIOUS

PDF

38.2 KB Created: 2021-05-24 03:20:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b46f2d4390912a4c3e2796645b92150b SHA-1: 446eabc063c2c913622084d0abcff9febac621fd SHA-256: 8cbee272d0459694d599ccdcc4b60c0cf4df8aed36d90fe0b0fc93375598df54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a call-to-action phrase, luring users with "free Robux" and "game hacks". These links redirect to known malicious infrastructure, indicating an attempt to lead users to potentially harmful content or further exploits. The presence of these lures and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/games-that-give-you-free-robux-game-hack In PDF document text
    • http://iprep-u.com/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://iprep-u.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://robuxhaxs.comIn 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
font_00_sfnt_off00003343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3343 26988 bytes
SHA-256: 269ac69807fa8965ecdda168d346590f968c45401cca84f84c06e089f581b21b
font_01_sfnt_off0000717b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717B 19168 bytes
SHA-256: c4d6735542cd49b50f18b2921f89e54fe5d8ee4af3f47c61005942af246faebd

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