Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fab35496ccf1e9…

MALICIOUS

PDF

34.1 KB Created: 2021-06-18 08:25:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1598a3bc9bfb24fae98b6fdf94e6d79d SHA-1: b1e7dee4f82feff64c1fee13b5fff0e11128df72 SHA-256: 34fab35496ccf1e9bfbafafe4f578a402a5d5b46fae4b8b6453e7478af244d0d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The document body explicitly mentions 'Como Evitar Ser Hackeado En Roblox' and includes numerous URLs related to free Robux, Coin Master spins, and game hacks. This indicates a phishing or scam attempt designed to lead users to potentially malicious websites.

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 http://netcdn.co/app/431946152/como-evitar-ser-hackeado-en-roblox-game-hack In PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/this-group-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/how-to-get-free-items-on-roblox-on-phone_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/pubg-uc-or-ag_GM1330123889.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/free-robux-traders_GM431946152.pdfIn PDF document text
    • http://xn--80aciiv6azczc.xn--p1ai/images/free-minecraft-server-hosting_GM479516143.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
font_00_sfnt_off00002f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F31 21840 bytes
SHA-256: 343e50f17e280c3fa8b95e4f4863c94329009ed8da8fa6f9793b87aab643fbed
font_01_sfnt_off00005f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7C 19244 bytes
SHA-256: 30b1099a2127fe54fc310e2347844e6755cd8dff079f35d0d59bff64780ae536