Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8e8deee7ba17fc…

MALICIOUS

PDF

35.5 KB Created: 2021-05-21 16:49:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3292921f9d78cf0d553b90f31e7ee2f3 SHA-1: 5409d86f94d10d375882053a5631339baddb3f56 SHA-256: 4a8e8deee7ba17fc97419e069c6403ad350c160bcffda52ecd723b10cdd7b2f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body explicitly mentions '60 Free Spins Coin Master' and includes a call to action to access a generator. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/406889139/60-free-spins-coin-master-game-hack In PDF document text
    • http://uristdona.ru/images/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/50-free-spins-coin-master-links_GM406889139.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000333a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333A 23816 bytes
SHA-256: 25c3df74bfbab8a6976618129009d9b0c965881287dfae99fc6ca301248654a1
font_01_sfnt_off00006997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6997 18224 bytes
SHA-256: c1ecca62003467cdf8c5fbac224d7e39febf20c3e1f0cb28698ef381036d4826

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