Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc28850ed2d3d56…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 17:45:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: db12ab4a5ea990f1945b8371a77835c0 SHA-1: cb8bc4fbc9a5441f1e166c1414d954d00f60a442 SHA-256: 3dc28850ed2d3d56a7a714a24e048b109eb173822c844cfa270f4032022f295e
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to game hack generators and free in-game currency, which are common lures for phishing and malware distribution. The document redirects to known malicious infrastructure, indicating a high likelihood of malicious intent. The embedded URLs, including one pointing to a raw IP address, are suspicious and likely lead to malicious payloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/best-minecraft-hacked-client-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins_GM406889139.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/how-to-buy-robux-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hack-with-no-human-verifycation-or-surveys_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-card-codes-for-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-on-ipad-mini-2_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/rise-of-nations-hack-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/assassin-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-accounts-with-robux-september-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-studio-apk-free-download_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-r-cheats-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/bloxbird-roblox-franais-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/tiktok-free-ad-credit_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/visea-descargar-hack-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
font_00_sfnt_off00002f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5E 21800 bytes
SHA-256: 939efe28b3c7fe7f815b38fd230e93030da8b0c3156764dce4abba9fbdc5a5d0
font_01_sfnt_off00005f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0F 18492 bytes
SHA-256: 86296843b88eed25728c8cc075b43780ca1cc7c9d5e807804b99454961e5616a

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