Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2a4ac0f30fcf67…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 13:59:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c40b84c644a7afb2803d77ce1515f5b5 SHA-1: 7d7e8e43f55ae9acd1466013435e61ab1ce441c1 SHA-256: 5c2a4ac0f30fcf678076e85ab43dff20d9c800216d1ab83645821467a9b7d340
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to a malicious redirector disguised as a game hack generator. The document body, though heavily obfuscated, contains URLs that are also flagged as potentially malicious. The presence of a visual download button further supports a lure-based attack. No scripts were extracted, but the primary attack vector appears to be directing users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/wizard-hacks-game-hack In PDF document text
    • http://lawnn.ru/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lawnn.ru/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CC 28208 bytes
SHA-256: d542e30d281ca7488abb9c87d7d1c7e67b739c965419f0c3eee0a0a41db2b279
font_01_sfnt_off00008785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8785 18088 bytes
SHA-256: 8b77488254b6aca3f83796c067843361ab864d2cfeb655e2bb6c253d8b72d837

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