Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd091c712e76cf37…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 06:29:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88e492485795acf26e58f56a9db64e73 SHA-1: d12b9338f336bbab44dcbbe802325ed0f802c759 SHA-256: cd091c712e76cf3770b52b1dd7840fb73905e3b32dec0b9561cd3f7626b9f9eb
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free currency for games like Roblox. The heuristic firings confirm these links are associated with malicious redirectors and lures. While no scripts were extracted, the embedded URLs and the nature of the lures suggest an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/como-hackear-cuentas-en-roblox-2021-game-hack In PDF document text
    • http://bressanassessoria.com.br/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-you-can-play-for-free_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-real-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/buy-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-roblox-cinema-4d-rig_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/roblox-nopede-egine-hacks_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-code-generator-pastbin_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-robux-with-no-serveys_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://bressanassessoria.com.br/images/how-to-get-free-robux-2021-no-human-verification-pc_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_off00002fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD2 22296 bytes
SHA-256: caa2e77063fa5c0be2a53dcc25b4f298df6c68de6a94e8d17a1883f52da6be40
font_01_sfnt_off0000615d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 19564 bytes
SHA-256: a0f218ca9d3cf0c97891de232dd375140efa5081f6765e85507e602d9cc2642e

Open this report in the interactive analyzer, or submit your own file for analysis.