PDF malware analysis — malicious · 1ec7592b13139944

MALICIOUS

PDF

44.3 KB Created: 2021-05-12 22:46:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: b9ba9799575575f1a32161acc171b1d6 SHA-1: d57ccd74acee25b4b87a5d5cc1c5e002d56f1a60 SHA-256: 1ec7592b1313994434fd972f15ea41dd1ccb4a2cb0122edab7526d59ae1232b7

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 0.9980

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/406889139/como-hackear-coin-master-2021-game-hack PDF link annotation
- https://www.stylafik.in/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-devil_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-spins-for-coin-master_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
`stream_003_off000048b1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48B1	29944 bytes
SHA-256: `7c7581597e5b780fa0f7d45b97c5f39fba0f5856b5b7372298d8dcf5f23adbc8`
`font_01_sfnt_off00008a8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A8A	18380 bytes
SHA-256: `7d079b1918a151c222a156c250c5aa0e1b0afb08b6f17fdb7ccf3df79397c72b`

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