Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5a071c976e1abec…

MALICIOUS

PDF

46.7 KB Created: 2021-06-04 04:27:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c0dc10f1cd4bed72abee761648b50384 SHA-1: 41bb8279a73f330ac88f766b53994cf033c1bfa6 SHA-256: d5a071c976e1abec22271ca9a0d88b1b37a9ccf796783d981a3dc59638e159bf
200 Risk Score

Malware Insights

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

The PDF contains a link to a malicious redirector disguised as a game hack generator, aiming to trick users into clicking it. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document may also instruct users to execute commands, potentially leading to further exploitation. While no scripts were directly extracted, the PDF structure and malicious link indicate a common pattern for delivering secondary payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/479516143/minecraft-name-tag-hacks-game-hack In PDF document text
    • http://library.fikes.upnvj.ac.id/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fikes.upnvj.ac.id/repository/how-to-get-free-robux-app_GM431946152.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_004_off000054f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54F8 27984 bytes
SHA-256: f78cf4b724ecb7724aae05c3e4133be732bd78d4ce5a595038692dedca646c72
font_01_sfnt_off0000943c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x943C 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

Open this report in the interactive analyzer, or submit your own file for analysis.