Malicious PDF — malware analysis report

Static analysis result for SHA-256 f089c4268672eac6…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 03:22:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71127cd94b5daf7285f2094b5d032a84 SHA-1: 59ff38a71dffd6ff4d8272f37aded6549fc8037e SHA-256: f089c4268672eac6019f2e1f293201aa4f57ef3937547bc23174244e4682ed16
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'free Robux hacks'. The primary lure URL is http://netcdn.co/app/431946152/free-robux-hack-yolasite-com-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit users through social engineering, likely leading to further malware downloads or credential harvesting.

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/free-robux-hack-yolasite-com-game-hack In PDF document text
    • https://my-private-intendant.com/images/tiktok-free-view-iphone-join_GM835599320.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/freerubux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-are-roblox-cheaters-cheating_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/unpatchable-robux-hack-code-generator_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-hack-roblox-files_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-anything-in-the-roblox-catalog-for-free_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-map_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-command-cheats_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_off00002f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F98 22684 bytes
SHA-256: ebbbb9ef6c3974b1031742ad25bdc2b007acdb95bf1c993d3de2f4a757518d50
font_01_sfnt_off00006205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 19420 bytes
SHA-256: f2381835dc8714716eea9f2ed002e1e5b9c23b2baaf5adb948042ab7c0a6e051

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