PDF malware analysis — malicious · 98a4a7f387e77b9c

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 05:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: ac7fb87ceca685e3e06e5526c32a31bc SHA-1: a0b202e8d82fd58dfbeb0e7462dc394a28676d7d SHA-256: 98a4a7f387e77b9caf1403535193151bd66923ba1eac6bd78b82e2d7fc2d7504

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 0.9865

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/431946152/shirt-ash-on-roblox-free-on-shirt-game-hack PDF link annotation
- https://kupinapopust.mk/pub/img/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
- https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spins-2021_GM406889139.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
`font_00_sfnt_off0000518e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x518E	24160 bytes
SHA-256: `c94106b1e2207338438008ce8a023a166d4c36cf6e0968d3e797c47069b95fb8`
`font_01_sfnt_off00008902.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8902	18340 bytes
SHA-256: `59d24f6c0d2284c96d540b7ca8599c67c8da44e632b2cc8aaebaa5853a926daa`

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