PDF malware analysis — malicious · 6038c8bfe0745d1f

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 05:56:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 8eed2440821bf9401441a96e91804ba5 SHA-1: c1f0718ee82cac27f451626790ad9ddb8d971bb4 SHA-256: 6038c8bfe0745d1fa1b0cd094cefcd798ce5b298a6a4e6fb305bfe1c49775fee

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 http://netcdn.tw/app/431946152/free-robux-no-verification-at-all-game-hack PDF link annotation
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-twisted-murderer-free-credits-givaway_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-robux-editor-hack-download_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/easy-roblox-today_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/legit-free-robux-2021_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/hacked-roblox-jailbeak_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-pasteur-brie_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-code-a-script-hack-for-roblox_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
`font_00_sfnt_off0000330c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x330C	22340 bytes
SHA-256: `2319a5e50e83292ddb38ae38af379467f54807c62f8e5ad1531a08d17f4d2860`
`font_01_sfnt_off000064f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64F3	19148 bytes
SHA-256: `5a0e9190e95b53368e7cb66d96866ddf92b1f6e1c3c90a967aca3b65a401f6e9`

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