Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1c2ad66d1198eb…

MALICIOUS

PDF

39.3 KB Created: 2021-05-22 20:38:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7cc86425c841f64bdb88da1950b1c922 SHA-1: 56f07c5057b5895bcacb2a1dfe3af87df5979be3 SHA-256: 7c1c2ad66d1198eb7f081d2a861d49ba77410a2b86d1e43e1bb75a749d0c863f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to game hacks and free currency, specifically mentioning 'Coin Master'. The primary link directs to a suspicious URL that is likely a malicious redirector or phishing page. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-spin-coin-master-2021-link-game-hack PDF link annotation
    • http://adveos.com/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/what-games-give-you-robux_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_off000031a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31A3 25704 bytes
SHA-256: 362b21fb7cd090162d01ff6762789d3545dd576939a5dba64caf57b00bd4fab9
font_01_sfnt_off00006de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE0 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00007782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56

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