Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e142613a3b0aaf2…

MALICIOUS

PDF

35.1 KB Created: 2021-05-25 06:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fbe803a429a1bcd814a13635b4a206ee SHA-1: 78ddf5c162fa904c336395708d30b8a19beb74e2 SHA-256: 8e142613a3b0aaf28311b8bc2eaace783e9ceab9f3ad4421d0c1d52e66a7f06f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'Coin Master Hack'. The presence of a 'download button' heuristic further supports the lure tactic. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/coin-master-hack-activegamer-game-hack In 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_off00002e20.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E20 25820 bytes
SHA-256: b626a05f193e5da26c096f366e3f3e0bb02c17cba7f5e0a4335cd40c495a99d2
font_01_sfnt_off000067bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BB 18376 bytes
SHA-256: 7942159ea88d166bbca90a684af9c7642873a6db171e4c543e33bc315b6ed94a

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