Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fdbee26a90dec6…

MALICIOUS

PDF

34.4 KB Created: 2021-06-27 07:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d61779712bff14dfb3ed8cc5e14cfd88 SHA-1: d998238cba570dbb5b07edeeacf09a470db8cbcb SHA-256: 19fdbee26a90dec61038a943a76edf0130c6a8669fa5658870fb5066bb287275
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 hacks and free item generators. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's designed to lure users to potentially harmful websites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/sandra-how-to-get-free-items-roblox-game-hack In PDF document text
    • https://newenglandafs.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/kazok-roblox-hack_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/hack-para-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-make-a-free-robux-game-on-roblox_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-free-download-linux_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/free-robux-bl4z3gamesco_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/https-robux-hack-top_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-piano-gui-hack_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/equillex-how-to-get-free-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-god-mode-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/roblox-gamepass-free_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/how-to-get-free-robux-on-roblox-windows-10_GM431946152.pdfIn PDF document text
    • https://newenglandafs.com/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://newenglandafs.com/images/minecraft-realms-free-codes_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
font_00_sfnt_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 22452 bytes
SHA-256: 712adecbebec9dc2fa29f2944b5693b3d74cf2cb06665d4edf5e5e83e50c493c
font_01_sfnt_off00006042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 19352 bytes
SHA-256: a0e1d993521775864bd70e90a0b97b1c1117cce2ebfe5552770603191799ca21

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