Malicious PDF — malware analysis report

Static analysis result for SHA-256 031c7f9b2d0391da…

MALICIOUS

PDF

44.4 KB Created: 2021-05-15 08:48:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 14383c6a277020e695b2ae668a6fe217 SHA-1: 26311106dd9cb557af697a0f8c0dd2f69f366520 SHA-256: 031c7f9b2d0391da20523c8b9653497e5f58c634eb17a2609650ad56a3ca1f1a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a "free generator / game hack" lure, specifically mentioning "Coin Master Free Spins Hack Download". The presence of multiple links to known malicious redirector infrastructure and the overall theme suggest a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-hack-download-game-hack In PDF document text
    • http://www.dcgsrl.it/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn 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_off00004baa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAA 27672 bytes
SHA-256: b36319feb1ca0e16f4031953dc10ec305e4ef772e4eaa4676caa9987f5639c90
font_01_sfnt_off00008a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7A 18636 bytes
SHA-256: da694bd0fa69da9f205a2bf67330739d542643c12690bfff988ed45d7c82aeae

Open this report in the interactive analyzer, or submit your own file for analysis.