Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa82ef4fb9434a16…

MALICIOUS

PDF

47.9 KB Created: 2021-05-16 23:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 263c666c9b81d54f57222020e84b94cb SHA-1: d0f7336f3ac86ea910107b3cf1a2a79eae69332a SHA-256: aa82ef4fb9434a168bb320a6740c7eeb2f7a13fb856c1b76b34aea5874e828c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and hacks to trick users into clicking malicious links. The embedded URLs, such as 'https://netcdn.xyz/app/431946152/body-roblox-game-hack', are identified as malicious redirectors, likely leading to further stages of infection or phishing. The document's structure and content strongly suggest a phishing or scam campaign, with the primary goal being to redirect users to potentially harmful websites.

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/body-roblox-game-hack In PDF document text
    • https://hekl-software.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/is-minecraft-free-on-switch_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_off000048f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F0 31944 bytes
SHA-256: 13a3d76d2639f3ea6055ca0878303b15dcb10c28115f666cb09952f5db96f4f9
font_01_sfnt_off00008f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6E 2888 bytes
SHA-256: dcdd98ee8e25436a83587ccb4027347dd2c3fcec95f3413942edd4086125bcca
font_02_sfnt_off00009942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9942 18140 bytes
SHA-256: 5c429d7d14e112022b2be879a8be260656d3ec767f5300b052428d03df27e3b3

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