Malicious PDF — malware analysis report

Static analysis result for SHA-256 197a26840bf0aa6b…

MALICIOUS

PDF

30.9 KB Created: 2021-07-19 04:41:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 75d6689c5c5c6c636922c10ec88458fc SHA-1: bf880eb84b18a976665b166b06cd65731ae16e2c SHA-256: 197a26840bf0aa6be10afd9bc5fa48ca253f697d235bd74e7378f7ae3445bd6b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for Minecraft. The document body also contains a prominent call-to-action button for a Minecraft generator. These elements strongly suggest a phishing or scam lure designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9182

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 http://netcdn.tw/app/479516143/minecraft-free-unblocked-game-hack In PDF document text
    • http://restarmenia.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://restarmenia.com/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://restarmenia.com/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://restarmenia.com/images/free-robux-no-survey_GM431946152.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_off00002628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2628 21892 bytes
SHA-256: ed430a5a14cfa019cd9f27af9e51251e7b90e8f8826baf16fbb67b4d108841bb
font_01_sfnt_off0000565c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x565C 18472 bytes
SHA-256: 4446ec9a14b3bfac30f066e0e962bc7f96b5cea98edad6ed93b9652aaf8297cb

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