PDF malware analysis — malicious · 2bf7635d7a472daf

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 02:13:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: f0f0f7053ef6bec05206b7e630d703a2 SHA-1: c75c352421f2a05865fd7eff6c7f83d9d1e64e45 SHA-256: 2bf7635d7a472daf254388bece99e724d730c9cbb725c6db804859ff92c29746

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages promising free in-game currency or hacks for popular games. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to direct users to phishing or malware download sites. No scripts were extracted, but the document's structure and embedded URLs suggest a lure for users seeking game-related exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.co/app/431946152/roblox-free-account-generator-game-hack PDF link annotation
- https://irecruitersafrica.com/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/nelson-diamond-hack-roblox_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-hack-no-human-verification-free_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/how-to-get-free-robux-on-a-ipod_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/free-roebucks_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-group-favorite-follow-bot-free_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/hacks-for-legends-of-speed-roblox-download-pc_GM431946152.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://irecruitersafrica.com/ckfinder/userfiles/files/sites-to-get-free-robux_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_off00003271.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3271	22592 bytes
SHA-256: `5b9e9ad95f61808d22e1b77c858eba1d21690d448e7ddf561bf552bbe3cefc0d`
`font_01_sfnt_off00006513.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6513	18896 bytes
SHA-256: `c111814c7461d24227b807202b5df53bea1b6f191d8a0a3452e849cb08d5dcc6`

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