Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9aadfbb12f281e…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 08:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2baf9f980f7072acf3fae9f8454be29f SHA-1: 4944b85af06a394a58e526ec45d194af402ed225 SHA-256: 5b9aadfbb12f281eafc0ae1d80ab1523526b288901cc8fdef85f959297539f23
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites promising free game currency or hacks, such as 'best-site-for-free-coin-master-free-spins-game-hack'. This lure is a common tactic for phishing or distributing further malware. The ML classifier also strongly indicated maliciousness.

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.tw/app/406889139/best-site-for-free-coin-master-free-spins-game-hack PDF link annotation
    • http://amanaya.in/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/roblox-gewicht-heben-simolator-3-hack_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/hack-de-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/robux-today-free-robux_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/roblox-free-catalog-item_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/exploit-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/hack-roblox-robux-jailbreak_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/2021-roblox-place-free-bricks_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/free-robux-no-scam-no-password_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/hack-para-elemental-battlegrounds-roblox_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/how-to-get-more-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://amanaya.in/uploaded_files/userfiles/files/roblox-feed-your-pets-hack_GM431946152.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_off000037dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37DC 22980 bytes
SHA-256: 5b8062a14e7372672dd113ddec5d4bd4dd92a1d80e3fc6809e1689ccd4266dfa
font_01_sfnt_off00006b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B56 18388 bytes
SHA-256: 0ca3f1afc428598879205a6dae7f58b1fa03e818abf44f8a5d68b7f98f4d0464

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