Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a93c35c18265622…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 04:35:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b877d16b333db904338cc0fe069c710c SHA-1: 245ab1e1a63743758067eac37d8cbf83fb3b2870 SHA-256: 5a93c35c182656220396c38ec92f3794c9e4b4220d5804a51f6c5894b154578d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hack generators. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to potentially malicious websites through deceptive links embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spins-hack-no-human-verification-game-hack In PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/ww-roblox-come_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/minecraft-java-free-download_GM479516143.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
stream_003_off00004d19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D19 24184 bytes
SHA-256: 7d31c1be4ae329dbc5b6d3800f5d595005ba8d0338a31809cd78f092fcd008b6
font_01_sfnt_off00008484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8484 18588 bytes
SHA-256: 081cdec62be70198d45fc172e7048a56943a6446be15e687158c1977e2c6d250

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