Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e83330791e2cd0d…

MALICIOUS

PDF

46.8 KB Created: 2021-06-01 07:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7271aab61b3446a0ffdadca1c74813e7 SHA-1: 0a5700f0924a84ecedc01853bb90edb168fc01bf SHA-256: 2e83330791e2cd0de07c6c83f8d98b998214010f91e2e7a7d3101e5fb03c2ecd
160 Risk Score

Malware Insights

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

The PDF document contains multiple heuristics indicating malicious redirector links, specifically targeting users interested in game hacks and free generators. The primary URL identified, https://netcdn.xyz/app/431946152/how-to-get-free-robux-easy-and-fast-on-phone-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs suggest an attempt to deliver a second-stage payload or lead the user to a phishing or exploit site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/how-to-get-free-robux-easy-and-fast-on-phone-game-hack In PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/why-wont-cheat-engine-work-on-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/cheat-admin-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/hack-to-beome-supertall-in-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/inject-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/pastebin-com-free-robux-promocode_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/is-bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-groups-on-roblox_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/hacks-for-roblox-script_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_off00005398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5398 27492 bytes
SHA-256: 029727dd23562357fff0f6b82325488327f538c541e4edd5178d9422bd62ac79
font_01_sfnt_off000091a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A6 19184 bytes
SHA-256: 4878868d9f770272e6946bab0f8e2d93694fde5dbac4843cb18ef1eebf0139fa

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