Malicious PDF — malware analysis report

Static analysis result for SHA-256 005c3d659636d8c7…

MALICIOUS

PDF

43.4 KB Created: 2021-05-14 13:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5495974fa9f009ec4b90f1fd33c0d7a8 SHA-1: eaa7baad7470fd59cf941b1f05737ea27d48d215 SHA-256: 005c3d659636d8c73aee87243a9d8287e91d4f667966f8252908691e7a3fc505
200 Risk Score

Malware Insights

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

This PDF document employs a lure related to 'free Robux' for the game Roblox, impersonating Facebook to encourage clicks. The primary link directs to a known malicious redirector infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-free-robux-com-game-hack.
  • 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/roblox-free-robux-com-game-hack In PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.das-partners.com/uploaded_files/userfiles/files/hacks-for-minecraft-windows-10_GM479516143.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
stream_003_off00004c18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C18 25708 bytes
SHA-256: 5b84b092d4aa4afd2f5b259a8808b4ddb89d3083584637eb12527fbb232b67ca
font_01_sfnt_off00008719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8719 18348 bytes
SHA-256: ea71f63ad969ac354b647f6e6da4581b14ed625e24a3109b04dcf91fda1e68c2

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