Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98c7ff5c9ae0175…

MALICIOUS

PDF

34.7 KB Created: 2021-07-02 07:52:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2aa123821458382379f491307df5638c SHA-1: ace816f39bb64be19b801dd1bc57f99c69522778 SHA-256: c98c7ff5c9ae0175c3b7fb940ec39e5af1b8426de4fce581ce6ffbd64a33aede
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.co/app/431946152/eclipsis-roblox-hack-game-hack. The document body and heuristics suggest a lure related to game hacks, likely intended to trick users into downloading or executing a malicious payload. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of exploitation.

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/eclipsis-roblox-hack-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-accounts-2021-mac_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-find-out-who-hacked-your-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/radio-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-and-slash-roblox-ghostemane_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-lobby-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-god-hack-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-giant-hand_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/fiddler-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/blue-banded-tophat-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-make-roblox-dont-saw-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-in-roblox-pc_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/www-roblox-free-com-generatoryolasite_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-free-movie-website_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3052 22532 bytes
SHA-256: 5f5809e7311ea2c3b58a05dbb163603ac6de1b4a440e4e28ebe57acd976e9c51
font_01_sfnt_off000062a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A6 18952 bytes
SHA-256: eba65414c4a7bd78c4256b10d9261c35f45692dfcacf3695dd7e5d33dd4384e4

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