Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b37ca4da51c3788…

MALICIOUS

PDF

39.4 KB Created: 2021-05-13 22:05:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 37c8623dad7acf975c031aad226daa56 SHA-1: ac88daa633e899845a0e106aca063f747084d5ae SHA-256: 1b37ca4da51c3788a3c1628a0a0d1a84dba8a7cf93ace6c98d9a106072239542
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, masquerading as a game hack generator. The document body explicitly contains phrases like 'How To Hack Coin Master Spin Ios' and 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a social engineering lure. The embedded URL is the primary indicator of malicious intent, likely leading to a second-stage download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0127

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/how-to-hack-coin-master-spin-ios-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_off00003211.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3211 27164 bytes
SHA-256: d9fd74e5b9850fb0740faeabae1c1cb4083b214507757c5ea78d2c60f0bcf0d4
font_01_sfnt_off00006f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F92 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off00007933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7933 18056 bytes
SHA-256: 53f47b5799dae006b4346a2eed5aba235b3af24a2c4343d13ea096ab027fb028

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