Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7416a5cf32a8b57…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 14:00:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 292c37a186e11803b50e45991f8d7a47 SHA-1: 8f6dcb13d13430ff0f24c512767ff303c9d2bf57 SHA-256: b7416a5cf32a8b57c98f610e75ad4ef7f5ea320968beef523379d04712357134
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector pointing to 'https://netcdn.xyz/app/431946152/how-to-hack-roblox-games-game-hack'. This lure, combined with the 'free generator / game hack' theme, strongly suggests a phishing or scam attempt to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed for initial access via social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-hack-roblox-games-game-hack In PDF document text
    • http://www.studiodamato.it/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://www.studiodamato.it/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.studiodamato.it/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.studiodamato.it/images/coin-master-free-spins-link-download_GM406889139.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_off00004827.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4827 27636 bytes
SHA-256: feb1b8f0c656f5bfc606047b0e69b6d42e8884e112494bf0c41d3d392ea1c88c
font_01_sfnt_off000086d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D3 18608 bytes
SHA-256: f0530f62cc2e234d68a11618bd0f649c02fcf1ebf2f14054a2e3aba439076e74

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