Malicious PDF — malware analysis report

Static analysis result for SHA-256 021dcce945c446a7…

MALICIOUS

PDF

43.0 KB Created: 2021-05-15 00:06:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e18dac42c55f3670eec8be226b93d7fd SHA-1: 2e16b968145802bdd0dd7ddd8b46e2a18b461c17 SHA-256: 021dcce945c446a7cde3c696342d09d9213afefa428ea2a20388dded65a874ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and currency. The heuristic firings indicate that these links are designed to lure users into clicking, likely leading to further malicious content or downloads. While no scripts were extracted, the presence of malicious redirectors and the lure content strongly suggest a phishing or scam attempt.

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/431946152/but-link-says-free-robux-game-hack In PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-login-hack_GM431946152.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
font_00_sfnt_off00004891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4891 26332 bytes
SHA-256: 292fc9df40642746159866bfff271bdff2b8e8724541882fe99ac304cb836fda
font_01_sfnt_off000083f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 18816 bytes
SHA-256: 8fbe90bccae9ee3155d3d967e7829d2e05c9e53767c9dd01fe36dc6e4248615b

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