Malicious PDF — malware analysis report

Static analysis result for SHA-256 0103ef7fc0b2aed8…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 06:58:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d094bae206ea36504d8a995940a80878 SHA-1: 64ea0158ef66e05f748ead5b962888ec17d2a3ca SHA-256: 0103ef7fc0b2aed8f0d4db16e53d202ebc3fa6a2e49ef848cffc4f672dc22e2a
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and IP addresses, masquerading as free game hacks and generators for popular games like Roblox and Coin Master. These links are designed to lure unsuspecting users to potentially malicious websites. The presence of these lures and the ML classification strongly indicate a phishing or malware distribution attempt.

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.co/app/431946152/dragon-wings-roblox-free-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/urban-network-robux-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-robux-hacked-in_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-shirt-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/lawn-mowing-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/go-check-out-rob-lox-xyz-for-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-how-to-get-free-robux-not-clicbait_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-hacks-download-free-dll_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/get-free-spins-in-coin-master_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
font_00_sfnt_off00002f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F11 22408 bytes
SHA-256: 7efd36f515a9afea8063dc87241c717822408eaf42aaeb2cc610ac46431153e0
font_01_sfnt_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 19136 bytes
SHA-256: a4b0db61bff908039b2607e9d976cb30e6de10bb2e97af248ea31f188262d157

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