Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1ea7fa0b03fde3d…

MALICIOUS

PDF

41.3 KB Created: 2021-05-16 15:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: faf73bf90e2a5ba561b0ed1f5dfc45ac SHA-1: 720f2af6082e89494b94e5972b2a44720a1b7b44 SHA-256: a1ea7fa0b03fde3d89e6c79758aacd194b0ca04b517b979d9a43a50ffea3b30a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically luring users with 'game hack' and 'free spins' content. The primary URL extracted, 'https://netcdn.xyz/app/406889139/links-for-coin-master-free-spins-game-hack', is flagged as malicious infrastructure. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/links-for-coin-master-free-spins-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003433.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3433 29740 bytes
SHA-256: 7abd661d790d843cc4778159ff905245e3c562e37ba615b9a0b85a300efcf246
font_01_sfnt_off0000775a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off000080fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FA 18056 bytes
SHA-256: 5bd6e3cfe68b47e0b382d784f8bacc73234a270e4b46fb36b887714955dd385b

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