Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c73be2d69121cd…

MALICIOUS

PDF

48.3 KB Created: 2021-05-16 10:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1313b15c5040a993f58ab5c1e9e3d7d6 SHA-1: 3bea8820ce6dc258c16f3a8f1c1bff7b73d8cb92 SHA-256: 05c73be2d69121cd72c891861ed8fd6e440e61bcd39dcd0298c1a79a030dba36
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, specifically targeting users with lures related to free Robux and game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-codes-no-verification-game-hack. While no scripts were extracted, the PDF structure and embedded links strongly indicate a phishing or redirection attack designed to lead users to potentially harmful content or further malware downloads.

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/free-robux-codes-no-verification-game-hack In PDF document text
    • http://bvmg.nl/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://bvmg.nl/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://bvmg.nl/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://bvmg.nl/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://bvmg.nl/images/how-to-get-minecraft-for-free-2021_GM479516143.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
stream_003_off00004853.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4853 28492 bytes
SHA-256: 56beaebc19ede6b8402a1f8d35bbd95be1c8cb496a93ee5bd38a086af652adf0
font_01_sfnt_off000088dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_02_sfnt_off000098ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98EA 18776 bytes
SHA-256: 1501cc25bcf8c3b3bf9df14f68216c1cc39cc5b0131e4343b63bafa21afb9c06

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