Malicious PDF — malware analysis report

Static analysis result for SHA-256 329d9874d2b98c72…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 05:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 90f74361244fe3965bd2e33b331dd871 SHA-1: c0cf8679035986133bb549de1a31aa8fcdc8f8e1 SHA-256: 329d9874d2b98c72575b6fa20d5ac4e3868d0366b82565ca71f5400d7bc672fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary link, http://netcdn.tw/app/406889139/real-coin-master-hacks-game-hack, is identified as a malicious redirector. The document's structure and embedded URLs suggest an attempt to trick users into downloading further malicious content or visiting phishing 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.tw/app/406889139/real-coin-master-hacks-game-hack In PDF document text
    • http://rgadventure.com/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/robux-today_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/google-moon-active_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://rgadventure.com/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5B 22608 bytes
SHA-256: eac004c9df8e8e158d989ed843bf5ac4d53307b5ede8dffbbd9ae4dd375e3c50
font_01_sfnt_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 18080 bytes
SHA-256: 8036c31bb1dfaeb579433bf8ca502beca93f54135728b4f3b0b6b4a98295ab57

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