Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e569f23e5fcc831…

MALICIOUS

PDF

50.3 KB Created: 2021-05-30 11:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6268fc406e0bf0b6b21f40e2464ca957 SHA-1: 7f0efbf4236955027a9c13adfa30b8c3eb66d4de SHA-256: 5e569f23e5fcc8313b042de1f88bdc854781819b9740c2ab84dee82f8f4044af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering free game items and hacks, which are flagged as malicious redirectors. The document body and embedded URLs suggest a lure to trick users into visiting these sites, likely to download further malware or engage in phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8293

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/free-robux-no-verify-2021-game-hack In PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-100-robux_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/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-robux-without-verification-2021_GM431946152.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/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://satsco.com.vn/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FF 26268 bytes
SHA-256: 4f72e5e4633aeca3624a0865e1f59c5a97290b2357bbb99e4acd9d157ffa8d25
font_01_sfnt_off000092a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A5 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB7 18848 bytes
SHA-256: 9f147bd5bf62c652754f553854fad05fac0b8df637ce3021f80b740c61e7be7f