Malicious PDF — malware analysis report

Static analysis result for SHA-256 be42ffb0d4f5250e…

MALICIOUS

PDF

38.5 KB Created: 2021-05-13 09:48:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 600fdb12ccb539ad387137fb1aa02517 SHA-1: bb5019445e82031f47c2a693a4985593c6c2ac99 SHA-256: be42ffb0d4f5250e9b6d6582a573258fac47d14339a76744d107bb2f4ffbe77d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirector lure, pointing to a malicious URL. The document body also contains text related to 'Free Spins And Coins Coin Master Link 2021' and a call to action to access a generator. This indicates a social engineering attempt to trick the user into visiting a potentially malicious site.

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/free-spins-and-coins-coin-master-link-2021-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_off0000350d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x350D 30252 bytes
SHA-256: 6338308226710f238f0ed9d9a3c387b1850f40aea73a6b12b2fac1192a5f3df8
font_01_sfnt_off00007463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7463 18632 bytes
SHA-256: 21453a49cd95b47374badb5f9754a763ab250e679095952556df99ea2beff8a3

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