Malicious PDF — malware analysis report

Static analysis result for SHA-256 104abb5547279539…

MALICIOUS

PDF

39.2 KB Created: 2021-05-24 05:17:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f4a97017e7a00bd2ff66527d8f2039af SHA-1: 728420d095b1b867aca84c7ab78ce303be5ef208 SHA-256: 104abb554727953960b3915dfde3653370cc47f5de927cbe325878fbb74d9b91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free spins, directing users to a malicious URL. The ML classifier also flagged the PDF as malicious. The embedded URLs and document body suggest a social engineering tactic to trick users into visiting a potentially harmful site, likely for further exploitation 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-spins-from-coin-master-game-hack PDF link annotation
    • https://cluster-consulting.com/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://cluster-consulting.com/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/www-claim-gg-to-earn-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003578.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3578 24908 bytes
SHA-256: 167084118f39f42807b1aa7c5f59d3c4a11cd87e5b4ac3aa54b4b2fb1f37f633
font_01_sfnt_off00006e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1B 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00007834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7834 18148 bytes
SHA-256: a8179ab01d9f651dd6fb5ce3364ead5561884d8b40fe8a62eaf26fde05d0c646

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