Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6c76143e86528c…

MALICIOUS

PDF

39.4 KB Created: 2021-05-13 00:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba1b8c80656fbf7a3082b4eb3d352ea5 SHA-1: 7205f72b1b6e6663d35f541cb3796400c796a294 SHA-256: 2b6c76143e86528c01327e7b055bd113ca7ee9d49183398a16d02e306a466c35
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with a "free generator / game hack" lure. The embedded URL `https://netcdn.xyz/app/406889139/hack-coin-master-2021-game-hack` is identified as a malicious redirector. The document body also contains text and links related to this lure, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/hack-coin-master-2021-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_off00003321.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3321 26288 bytes
SHA-256: 96688828b8b4e4bf78528617e8d48ca3ebecd8a190abcd1c0f206550bed7c1af
font_01_sfnt_off00006f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000078e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78E3 18116 bytes
SHA-256: a3df71077179c7440b1e4836f0868e786a4fbdd8e53d65e7c5dca2578e10a822

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