Malicious PDF — malware analysis report

Static analysis result for SHA-256 cecea4823daf33eb…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 06:47:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 542b0b46d2a725125fb621f8b82405f2 SHA-1: c93bf686fb772794ff62d25db7d5a6305663a1fc SHA-256: cecea4823daf33eb5af6a027ea660df642975b81d2360257db0e7ad07b0e2971
200 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators, directing users to click on a link that leads to malicious redirector infrastructure. The document also instructs users to copy and paste content into a shell, indicating an attempt to trick them into executing commands. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest a potential for further payload delivery or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-generator-cheat-engine-game-hack In PDF document text
    • http://suaedy-library.net/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-50-robux-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-jailbreak-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-mad-city-cheat-to-kick-people_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/eclipsis-hack-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-subway-surfer-play-for-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-october-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-easy-march-april-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-without-root_GM406889139.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_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 22984 bytes
SHA-256: 0ab377510faf6adeed77c083ad9b63f9b002866d2822a3293bfea18f851407eb
font_01_sfnt_off000064ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 18944 bytes
SHA-256: d2e9f8da69b4cd9291622fd343539fc82565958126497c0461b09b9f118f666b

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