Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7251749c3bdbfc6…

MALICIOUS

PDF

40.4 KB Created: 2021-05-11 18:03:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 815c596f4999fe1b6e997e2b7891bc27 SHA-1: 137cd2e45f118e28f578fe455fc1d68df1e8fe38 SHA-256: d7251749c3bdbfc692e551a5b6abad31e5454a2fa916bd831f95e45d78356e83
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL related to a game hack. The document body also contains phrases like 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a social engineering lure. The presence of a malicious redirector suggests an attempt to download further malicious content or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

Heuristics 3

  • 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/http-bit.ly-coin-master-free-2021-spins-game-hack In PDF document text
    • https://coinmasterspinandcoin.comIn 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_003_off0000339c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x339C 30056 bytes
SHA-256: 7ab940cd96ea9bc58a2edf36512b6298516db7edd662ba7b13cbd131b4188262
font_01_sfnt_off00007139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7139 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEA 18824 bytes
SHA-256: 7e3049b9a5a0ae93670f4a3987e867be19f2251f6b8a6c3356ce1f88b75303f6

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