Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7644b546434a1f…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 16:45:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f67463d17878c0d034010945076baf0d SHA-1: 89c93bbd840a51aa36b85f52afa135577c59cbdd SHA-256: ae7644b546434a1f57ecc16b45a55fe3b449c1be08ac5f00dc5024d7d7222e77
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to redirectors and link farms, masquerading as generators for game hacks and currency. The primary redirector URL is http://netcdn.tw/app/431946152/claim-roblox-game-hack, which is associated with malicious infrastructure. The document body and heuristics indicate a lure for free game items, likely leading to further malicious downloads or phishing attempts.

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.tw/app/431946152/claim-roblox-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-yamask_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/nopde-engine-64-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-roblox-accounts-passwords-online_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-a-free-dominus-hat-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-noclip-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/youtube-cheat-central-robux-july2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-no-human-verification-2021-working_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-youre-hacked-account-back-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-promo-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-hack-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/www-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-furk-blocburg-cheat_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-roblox-soros-resataurant_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-money-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-cheat-engine-table-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-robux-hacks-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-with-player-command-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000324d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324D 22804 bytes
SHA-256: 7e69ff0db6d987184253389497306931ab43739aa079b302a16d2939b36a766d
font_01_sfnt_off00006529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6529 18864 bytes
SHA-256: d70b750096d3c59baf5f0f0ea3863712f8ab6b73e17a22a6786d3f342d6747ec

Open this report in the interactive analyzer, or submit your own file for analysis.