Malicious PDF — malware analysis report

Static analysis result for SHA-256 0454c767554d8e09…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 23:55:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 37d0d9820ad4b1458ed7f849879d7a62 SHA-1: db1ece9b14477cd1309ee8a8fd3ac31a5547844c SHA-256: 0454c767554d8e09823fd8ed3442ed6f30ad76076fa76179c63df0672df66c79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting free game hacks and generators. The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/roblox-play-now-for-free-game-hack In PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/hacked-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-roblox-steamy-xxx-vids-lol_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-robux-hack-script-for-free-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-glitch-hack-download-jailbreak_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-roblox-skin-generator_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/domino-crown-roblox-free_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/25-000-free-robux_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-click-the-button_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-roblox-wwwgeneratoronlineinfo-roblox_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_off00003269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3269 22684 bytes
SHA-256: 48a29c4add9688bfc7dfb5eade5d13400913d9faa9408a35841ec7df422f6fd2
font_01_sfnt_off00006539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6539 19148 bytes
SHA-256: 686d2062e78f1df2d276c91edbad0d84cda926d52b0f640b8f5b427429c15233

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