Malicious PDF — malware analysis report

Static analysis result for SHA-256 77128321a20602b3…

MALICIOUS

PDF

37.0 KB Created: 2021-05-14 00:07:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a7bd7699cbff1be828a0267c3c50e916 SHA-1: db8528c1bca2a21fbdf65aec1bfefc71a5c6cde4 SHA-256: 77128321a20602b32220ec28cb2f46ff24e3996e1a60a591fc5449e3906be65b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing indicating it links to a malicious redirector disguised as a game hack generator. The document body contains text and links that reinforce this lure, specifically mentioning 'Minecraft Com Free' and a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action. The embedded URL is the primary indicator of malicious intent, likely leading to a further stage of infection.

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/479516143/minecraft-com-free-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_off0000360b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x360B 25484 bytes
SHA-256: 0544ca0fe8d9a75fb9d90a213913e3d0c7ad57da4d6a02c144356af433c1921f
font_01_sfnt_off0000708b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708B 17968 bytes
SHA-256: 5bf46a6d08d3ffa684fcf656b6008ff7f2ef06acfe8c47aedee45889ac3be72f

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