Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a204ab00962da67…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 12:51:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 021cdd14b68d31a2694b4d358bac5b87 SHA-1: 101e4c2c39d56a1f87da9f5ef3c901474b1ac0ab SHA-256: 8a204ab00962da67a5e21d17f8b08caf62701a21ee9071c38b1653faf67f9b84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The ML classifier strongly flagged this PDF as malicious. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or downloads.

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/blogspot-free-spins-coin-master-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-og-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/pin-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-game-pass-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-on-roblox-2021-july_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003381.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3381 22696 bytes
SHA-256: 9be8eceea0b8d3ce954350106ee6a270e0d194ef3adfff18caef6815b36c64e6
font_01_sfnt_off00006649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6649 18464 bytes
SHA-256: 230ca97f16dd2ddf1879142f15263642e6919db147f0bcf840325c8143f28d8e

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