Malicious PDF — malware analysis report

Static analysis result for SHA-256 983fb669bc909d65…

MALICIOUS

PDF

34.7 KB Created: 2021-06-21 03:52:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0f44bbb0193f2164beaffffa546a23c9 SHA-1: 062dd74aa800ea20198937bb629ef73db7c844a5 SHA-256: 983fb669bc909d65faf943088d11632ad926d4d3c51064583d40a227547a2518
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-mobile-app-free-download-game-hack, which is associated with a 'free generator / game hack' lure. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially harmful files or visiting further compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-mobile-app-free-download-game-hack In PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/arsenal-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-restaurant-tycoon-cheat-engine_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/pubg-uc-unlimited-free_GM1330123889.pdfIn PDF document text
    • https://aits.co.id/ckfinder/userfiles/files/how-to-hack-a-roblox-account-2021_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_off00002f37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F37 22336 bytes
SHA-256: 8ce4ae921d1bff54f378807bff1272f9ac74b984531bcbaa9a2db7f6e20de043
font_01_sfnt_off000060df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 19648 bytes
SHA-256: 7057edd4102a877fe3e7dcd03a38473f4f4daa2db50003c79dfa403cee1c94c0

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