Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa59c06e6034e270…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 08:46:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fb8fd6679370306d6f0d927d1a85e97f SHA-1: e04a0680df5fb00c6e803093d8a35e237262b3aa SHA-256: aa59c06e6034e27094382ad8f7ee377019918209dd4116ce5e686c43dbd27318
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF's structure and embedded links are sufficient to infer a malicious redirection workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-spins-coin-master-android-game-hack In PDF document text
    • http://www.centromedicoaurora.it/images/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://www.centromedicoaurora.it/images/how-to-get-free-skins-on-coin-master_GM406889139.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
stream_003_off000048b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B9 25152 bytes
SHA-256: be1107e594b0a8068c9b76f7af58777cf2e7a1ce5def29a075540bed267f95ab
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 18060 bytes
SHA-256: bb87bb437521cd022de534ae7fd6b6624f0fed030f820aba0cb18b6212db1e0f

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