Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e154f764b2e37e…

MALICIOUS

PDF

47.7 KB Created: 2021-05-11 13:32:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9657e100c616c289ed95054efc0bdba3 SHA-1: 0adb2cc5518135c025e12a15e55733ac974726b3 SHA-256: a9e154f764b2e37ee57f7329700a1cda86d344dbd65dec993a69bff159d3aa8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a website promising free Robux, a common lure for scams. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the document's content strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/431946152/i-want-free-robux-game-hack In PDF document text
    • http://selectionspdf.fr/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-download_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/rbx-free_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4959 29612 bytes
SHA-256: 577266986bfb6eaf36a4e5aa23fc43d6fbe26769ba55207222eb1db7af2e1be2
font_01_sfnt_off00008c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C37 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_02_sfnt_off0000974b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974B 18544 bytes
SHA-256: 21c84a9f4ed3b5496a815e3404d7d5cd07faeb2ee17584cb0226aa903f450845

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