Malicious PDF — malware analysis report

Static analysis result for SHA-256 4314cefcf5414b4a…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 10:02:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8803a54056c004938eb8a7c27505a899 SHA-1: 046dd87e5996f2ee7789182c447f62cfac0bf0a1 SHA-256: 4314cefcf5414b4a67083bbfa6db2879827baa879fefb54b1a9b554530ea6542
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and currency generators. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document may also instruct users to interact with their clipboard in a way that could lead to command execution. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or scam attempt designed to lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/roblox-redeem-card-codes-free-game-hack In PDF document text
    • http://www.ladillo.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/robux-gratis_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/robux-games_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-get-java-minecraft-for-free_GM479516143.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
font_00_sfnt_off00004956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4956 25332 bytes
SHA-256: 166dde85a23674e452599f54b66e94324f7ff8f8545370badb351132df8cecb0
font_01_sfnt_off000081b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 18612 bytes
SHA-256: a80930eafb0fa49b70c8b74e6f01afa17dc8341ac3dd6991c9bc21ab4de62243

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