PDF malware analysis — malicious · 0bdd83a01ed61e3e

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 08:18:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 73d203a6078987f94fd40a8e505c22ad SHA-1: 016df797fbb6b491aa8569486a4ceccd4a2d6215 SHA-256: 0bdd83a01ed61e3e43da7e61916746a878371ea72188edf5bfe356a792b446a9

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/roblox-demon-game-hack PDF link annotation
- http://hosoffices.com/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/roblox-is-being-hacked-9-21-2021_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/john-doe-hacker-on-roblox_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/roblox-install-free_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/nopde-engine-roblox-hackes-prison-life_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/cheats-coin-master-free_GM406889139.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/pokemon-go-free-100-iv_GM1094591345.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-robux-group-roblox_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/noclip-roblox-hack-download_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/comment-cheat-les-robux_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/app-hack-roblox-pc_GM431946152.pdfIn PDF document text
- http://hosoffices.com/ckfinder/userfiles/files/free-spins-coins-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
`font_00_sfnt_off00002e90.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E90	21936 bytes
SHA-256: `f3a8b6b014a8af363f61c82728b038fe027914242c3d39b9823b26a78c6e9148`
`font_01_sfnt_off00005f2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F2D	18912 bytes
SHA-256: `5300b7a7f671f500181493ac40c0ce3d1c9e7fccac20a222f14f303ae0199455`

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