Malicious PDF — malware analysis report

Static analysis result for SHA-256 017a90ae3baccd2b…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 08:54:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d387c0715ca4a2e560f6f713a6fe6efd SHA-1: 63fde014246412a1a0463ebc6d324eb0f69a7a0a SHA-256: 017a90ae3baccd2b19e11fde41a93e80cb490d96732caa4e6687a788f6686954
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-hack-robux-2021-pastebin-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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-hack-robux-2021-pastebin-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/speed-roblox-hack-mac_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/10-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/discord-invite-for-hacked-swears-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/earn-robuxfree2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/i-hacked-this-person-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-how-to-get-into-paid-access-games-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-the-ultimate-victory-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-download-free-online_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/site-to-have-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-legitimately_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_off00002f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8A 21524 bytes
SHA-256: ee5a1dd7da99711c1091f6035551b9834dcf98419b65a429aaa332a6d077b5f2
font_01_sfnt_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 19576 bytes
SHA-256: ecfed4e9f9a9f91e9b54ed9bbf142733a08a163b166d69b2b7a2dd08dd20af69