Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7937657f16b976…

MALICIOUS

PDF

46.2 KB Created: 2021-05-16 19:34:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ac9e4f21e06076ce383ff065a3cccf1 SHA-1: 74df04193394873b7fbabb7848d3539ccbb2d7d8 SHA-256: aa7937657f16b976e7f74ac148b18043dda8c3e6ab3502238c22507d5e8e2165
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' to lure victims. The primary redirector URL is https://netcdn.xyz/app/431946152/free-100-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-100-robux-game-hack In PDF document text
    • http://d-cision.nl/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/earn-rbx_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-spins-and-coins_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A31 26080 bytes
SHA-256: 5ec8bd6f2b1b1142837d17cdb3682ec207bf03383e3e7f3cb9ddd400e96e8407
font_01_sfnt_off0000856e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856E 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9215 18292 bytes
SHA-256: ade71c57547996cc2793a44f7be3e933a3a5664d4c8f362da863e6c031d51f12

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