Malicious PDF — malware analysis report

Static analysis result for SHA-256 422e5fc5a3a0ae23…

MALICIOUS

PDF

38.0 KB Created: 2021-05-14 08:00:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 905d4c0a049546d75f5398a14235d110 SHA-1: 6d191b126c6b0817a20a886015d1a45e5855a4be SHA-256: 422e5fc5a3a0ae238096acfcaac187d9470c7177ee8485f9c4fdc99f58806e4d
130 Risk Score

Malware Insights

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

The PDF document contains embedded links that are identified as malicious redirectors, specifically luring users with a 'game hack' theme. The document body text and heuristics confirm the presence of a call-to-action button and a link to known malicious infrastructure. This suggests the primary goal is to redirect users to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-card-collection-coin-master-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003540.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3540 29852 bytes
SHA-256: c3a4184f63ea5690a1d0e8868046b2eba1cd6102026edffcc47c1ecb2c8f3ffd
font_01_sfnt_off00007425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7425 17964 bytes
SHA-256: 98f8530e6ad966606d275a875844091aa6ee01ba2a7d6c4e2ba80f09f845ae47

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