PDF malware analysis — malicious · 1d9a78c5c41cb48e

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 12:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 7875ce1c99a6baa1f5a3a4c4ef6a146a SHA-1: f9c45463f7af2f8496ba8dad546b2f867a703500 SHA-256: 1d9a78c5c41cb48e784f8bb2be9c37ae7f8ee35c6b65e0ebc9d71613f4f51eea

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 0.9748

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/406889139/coin-master-free-cards-link-2021-game-hack PDF link annotation
- https://www.insol-europe.org/uploads/files/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hacks_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/easy-roblox-today_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/claim-free-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.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_off00004fec.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FEC	24304 bytes
SHA-256: `9d7b600a0762a2b3a03200fab31331b82580b1cedf5e26c384f709f6972b3aa6`
`font_01_sfnt_off000087ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87ED	2920 bytes
SHA-256: `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`
`font_02_sfnt_off00009207.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9207	18456 bytes
SHA-256: `b51790488d60a3c79421cfddad0a6ae9f074b26b8d27a704dda1d2d7bad48ec0`

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