Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b2dac78b6e87130…

MALICIOUS

PDF

36.2 KB Created: 2021-05-16 19:34:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 45c6abc28ef0a493cc91804272c62bc2 SHA-1: fb54012b355ffed165c7766fd52d24cad0968eff SHA-256: 1b2dac78b6e8713055f7c1fa5065e877a5489d2375d070085d94c3b8c1e14b49
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a lure for a game hack generator, with multiple links pointing to known malicious redirector infrastructure. The document body text explicitly mentions "Coin Master Free Spin Sites" and includes a "CLICK HERE TO ACCESS COIN MASTER GENERATOR" call-to-action, reinforcing the social engineering aspect. The primary IOC is the malicious URL used for redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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-sites-game-hack In 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_off00003304.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3304 25840 bytes
SHA-256: 22084284c305f8b9094e88a0ccb501c33e588a1e56b8665de787099c791c4528
font_01_sfnt_off00006d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 17884 bytes
SHA-256: 7b855ef2bb944b5b370c61480927ccad63ff31bdbf820bc1f0da9d35a10f5fb2

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