Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceef496c072908ae…

MALICIOUS

PDF

36.6 KB Created: 2021-06-22 23:17:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ff80b01add5a97474d7610af74d4b0c3 SHA-1: d64983f5adc587a4d3b9e28cce02bc7cc6f5c677 SHA-256: ceef496c072908ae0b69f77adfc1a60e27699f4344b9eab70f7e399984f20af0
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple heuristics indicating malicious redirection and game hack lures. The primary lure directs users to the URL http://netcdn.co/app/431946152/free-roblox-toy-codes-2021-game-hack, which is flagged as malicious redirector infrastructure. The document body and embedded links promote free generators and game hacks, aiming to trick users into visiting these malicious sites.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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/free-roblox-toy-codes-2021-game-hack In PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-make-roblox-gfx-for-free_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-do-you-hack-free-robux-2021-on-pc_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/robux-win_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-robux-hack-2021-iphone_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • https://ciptawiratirta.com/assets/CKImages/files/noclip-roblox-cheat-engine_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_off000035fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35FB 22724 bytes
SHA-256: b4b5d46dd8607c615e72f1bad47401ce54ebbcbd09ca564c16c0f99eedef64af
font_01_sfnt_off000068fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 19404 bytes
SHA-256: d69dc009ca5c1a88d041a827f1c58a74829db1b517c4b80ace25ccdd541b8d6b

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