Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f4950b2aae1878…

MALICIOUS

PDF

36.8 KB Created: 2021-05-10 12:32:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2c113c7e0ec83f8e95b8d5793ec194d5 SHA-1: 8505450b9948a492ad8f6e38583fd0a61e0ef25d SHA-256: 70f4950b2aae1878a9f4d5f5a0b38e6b4c152ca847efd13ae99e0ae953eb65a3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a malicious link disguised as a 'Coin Master Free Spins Link Today Hack' and a 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call to action. This link leads to a known malicious redirector infrastructure, likely intended to deliver a second-stage payload or phish for user credentials. The document's structure and embedded URL strongly suggest a social engineering lure for initial access.

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/coin-master-free-spins-link-today-hack-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_off00003465.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3465 25072 bytes
SHA-256: 2995d97a575d900f71abadb73b42315dfbd87998c781e503a199138464780484
font_01_sfnt_off00006e3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3F 18412 bytes
SHA-256: 78e241cf2016df2e6ebc2ce00be22676d65e6ec45cce47e077571dd8c0cc4425

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