PDF malware analysis — malicious · 61ed282fb868f7b9

MALICIOUS

PDF

48.9 KB Created: 2021-06-03 06:58:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: ae6997472862564adb418d5d39c13d69 SHA-1: 10e3224f21e7770b84d5083f9abf8c2eeba3e1be SHA-256: 61ed282fb868f7b981d53095efeea0f22430821b1da4ee920903aaa6216d91c4

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 0.9796

Heuristics 5

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.
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/431946152/how-to-hack-a-roblox-account-2021-game-hack PDF link annotation
- https://www.soil2soul.ae/uploaded_files/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
- https://www.soil2soul.ae/uploaded_files/userfiles/files/robux-free-gift-card-org-hack_GM431946152.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
`font_00_sfnt_off00005219.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5219	25528 bytes
SHA-256: `11d29243326792b868fda23b8280ce203dbbb5a6bc86d6c7a5192d4c2074b4ab`
`font_01_sfnt_off00008cfb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CFB	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009a0d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A0D	18992 bytes
SHA-256: `aeef6a7714c6357f73dd4bac3524810632f54ab1d1528492d13c90d39421ba58`

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