Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3c80ccae6e943d…

MALICIOUS

PDF

36.0 KB Created: 2021-06-18 23:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3491a03a27256568f5e549a411cc0199 SHA-1: 4fc6278b789832b6a7ec76526f5ca1353155a45b SHA-256: 9e3c80ccae6e943df770d9d7ee9ec343e0681e2d377a3a390851f60827d95367
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, directing users to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a site that likely hosts malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/cant-hacking-to-pokes-acount-in-roblox-game-hack PDF link annotation
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/pokemon-go-free-codes-2021_GM1094591345.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/pastebin-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://www.eisgroupme.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_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_off000034b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B0 22644 bytes
SHA-256: b8e3831f9d12870be2476f6e8efba7cedc9e2a96245f51a305e23412fc147492
font_01_sfnt_off0000677e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677E 19176 bytes
SHA-256: 7206bc28416f496aff2326c9fc3ac40c80b3b2bccc02c59f54c81d28f1e9f3bc

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