Malicious PDF — malware analysis report

Static analysis result for SHA-256 7032be9be9df6c38…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 02:57:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b03ecb2ef1b68ac51e4f0a1946a79e42 SHA-1: 6ab2a766c46e02675d644b1e31422800ca5838d3 SHA-256: 7032be9be9df6c38040fe2a479c907340549de329bef9e10c82e92a0c4f10951
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, many of which are part of a link farm designed to attract users searching for game cheats and free items. The primary redirector URL, http://netcdn.co/app/431946152/roblox-adidas-shirt-free-shipping-game-hack, is flagged as malicious. The document's structure and content strongly suggest a phishing or scam attempt, likely leading to malware download or credential harvesting.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-adidas-shirt-free-shipping-game-hack In PDF document text
    • http://cintabaca.org/katalog/repository/https-wwwrobloxcosims-4-cheats_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/chrome-store-extension-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-dominus-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-unlimited-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/comment-hacker-roblox-avec-cheat-enginer_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/hack-coin-master-for-android_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_off00002ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DED 22100 bytes
SHA-256: 2b3f1f5266659770b67202c76613e8aa5adbfcd6ee164d65350707033291877b
font_01_sfnt_off00005f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 19388 bytes
SHA-256: 63ee7d37593469d33108bb8375455f54bac78fcbc1145e589fcc4f734a2bc8eb

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