Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1c0e203f1433fc…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 14:09:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8388c4a40616d1757ea1aba3c67ab9f5 SHA-1: bcb0c328dc358436a5cebd02df41ddbbf9f1c4e7 SHA-256: aa1c0e203f1433fca181496677bc2f962c019f8c7ebe3a4c13369f48363553a0
200 Risk Score

Malware Insights

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

This PDF document contains multiple links designed to lure users into clicking on what appears to be a "free generator / game hack". The primary link redirects to a malicious infrastructure that impersonates Walmart, likely to harvest credentials. The PDF structure and embedded links suggest it's part of a phishing campaign, potentially leveraging a client-side exploit to facilitate the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/lazyblox-com-free-robux-game-hack.
  • 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/lazyblox-com-free-robux-game-hack In PDF document text
    • http://mechanism.gr/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://mechanism.gr/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://mechanism.gr/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mechanism.gr/images/mcpe-master-hack-unlimited-coins-download_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_off000049f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F5 26100 bytes
SHA-256: b3faa7a382713f60c147e13ca043bce9fe0dafa6665c63371da0fe32c1bd1103
font_01_sfnt_off000084f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F5 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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