Malicious PDF — malware analysis report

Static analysis result for SHA-256 5349cc664d23b5f0…

MALICIOUS

PDF

47.4 KB Created: 2021-05-21 10:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 25f86a436be69aa6254394ed8459df8d SHA-1: bfcf8694828fb88e960766160b59adf568528afa SHA-256: 5349cc664d23b5f07d7d7904295c4a9b23018f51c9dbac279ba218aea63202d7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'game hack' or 'free coins' lure. The heuristic firings confirm the presence of malicious redirector links and a lure for a download button. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely leading to a further stage of infection or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0113

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-free-coins-link-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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e94.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E94 26412 bytes
SHA-256: 72c67bc30123c8588c3cb45fee39e3a32667b227262416891b2521d580953c84
font_01_sfnt_off00006cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBF 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off0000778a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778A 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off00008aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAF 17880 bytes
SHA-256: 5ce88b684446e36e89a0643934549b22fce1d776877bbe9d9a558feafde7429d
font_04_sfnt_off0000ab6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6E 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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