PDF malware analysis — malicious · 6a81fbf7680feb69

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 04:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: a3886a825a74816246f836f0e33a2bf5 SHA-1: 95b13eb0e54565268a2c327b17fe1e76583c6112 SHA-256: 6a81fbf7680feb69fd62ae21fa28c1f31e3503e68c25f9a9bb68c6ca503592ee

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/431946152/ways-to-get-robux-game-hack PDF link annotation
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/get-free-coin-master_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/minecraft-jar-free_GM479516143.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/mc-hacks_GM479516143.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.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.

Filename	Kind	Source	Size
`stream_003_off00004b7c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B7C	24608 bytes
SHA-256: `08e04c5bd7f96069706e5449aebdc66f61c93b4b3f22c68905bf0f19954a68f3`
`font_01_sfnt_off0000844b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x844B	18560 bytes
SHA-256: `78441860773be54e7672751e0535bd0e3101a748f368cdf4dff6de317c2bf851`

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