Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96db96cf9550179…

MALICIOUS

PDF

38.3 KB Created: 2021-05-20 15:19:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e3fd0848c46d1bd2348efb5b6a2b57f5 SHA-1: 66dde763da138f1d89b5aba69bb4c95b32187195 SHA-256: f96db96cf9550179ef4cb424e022ea3a7b1b69f1c7894c3ff4ed5ba035d1aa18
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free generators. The document body and embedded links explicitly mention "Coin Master Free Spin Today" and "game hack", indicating a lure to trick users into visiting malicious sites. The ML classifier also flagged this PDF as malicious, supporting the observed malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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-spin-today-game-hack In PDF document text
    • http://gruporamos.do/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gruporamos.do/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://gruporamos.do/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://gruporamos.do/images/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003249.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3249 24460 bytes
SHA-256: 295a6af1079571d5e6c083c25d26d38d29f3d1f24eadac1cd63c8eec1c76f25e
font_01_sfnt_off00006a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000073fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73FC 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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