Malicious PDF — malware analysis report

Static analysis result for SHA-256 603756ac61e9dc37…

MALICIOUS

PDF

37.3 KB Created: 2021-05-22 06:09:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3cb7cab2e6d50771fd868ea830b3e501 SHA-1: c7fbce006fe4aa984c55ccff1f64cbce2bac0790 SHA-256: 603756ac61e9dc3770b1b1de978f9295c1365b0ef63fd0d8584ee7cb815ed150
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which redirects to a malicious URL. The document body and heuristics indicate a social engineering tactic to trick users into visiting a site that likely hosts further malicious content or exploits. No scripts were extracted, but the embedded URLs are highly suspicious and indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/minecraft-windows-10-edition-free-download-game-hack PDF link annotation
    • http://cmfd.nl/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/free-robux-for-kids-no-verification_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B5 25756 bytes
SHA-256: dc7a95922a45cd3e89805c8cc4c6ad7dbf6f24cd6d3c285025957db2e37a99e5
font_01_sfnt_off00006eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDA 18764 bytes
SHA-256: cc8d2d4a5b4bbe222845f4f655e2132ea290cc3fc507b9f2ca034e5c83bdcdde

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