Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6b2475688a2bd8…

MALICIOUS

PDF

45.7 KB Created: 2021-05-11 14:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 29b0c837aebe52483a91aaa5e247ae0f SHA-1: 4523715ee0a483369d8d41d08c44d8dbc1dae522 SHA-256: ad6b2475688a2bd86dc618be4b584c0a73545f93e597fa6fe8ef580dbd9bd490
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.xyz/app/431946152/robux-com-free-robux-game-hack PDF link annotation
    • https://www.fenews.co.uk/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/roblox-top_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://www.fenews.co.uk/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://www.fenews.co.uk/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.fenews.co.uk/images/robux-free-com_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_off00004bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD3 30816 bytes
SHA-256: 0842a0961f9f2d97401da4a6c0d99eb8bb3fd07df600dbd510b84b2082be2bca
font_01_sfnt_off0000909f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909F 18276 bytes
SHA-256: 15a0db03ecad41b32ad15729058012b5ee1d917146ec7af3e780186d41394abc

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