PDF malware analysis — malicious · fae14b38fc30b2e2

MALICIOUS

PDF

47.4 KB Created: 2021-06-03 16:13:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 87aa91c149fa32ef8543410547205c08 SHA-1: c082f2f066b25eb04482cf8db99316cb7fd301ad SHA-256: fae14b38fc30b2e21319297c8d5009eadd23ddc6fd6f024882a8954d2fd3f308

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 0.9769

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.online/app/479516143/free-texture-packs-for-minecraft-pe-game-hack PDF link annotation
- https://www.jcn.co.uk/uploads/files/files/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/rewardrobux-com_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-views_GM835599320.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/roblox-free-body_GM431946152.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://www.jcn.co.uk/uploads/files/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000054b4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x54B4	24824 bytes
SHA-256: `159306a23fb2e6804a1539f6b013755f640b2d1c12ab928da715f90cc1a8958c`
`font_01_sfnt_off00008c68.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C68	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off00009678.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9678	18384 bytes
SHA-256: `4bd922cb808520f712e6f68915d55ea385c9bd17e049420b207e71ca6d562f93`

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