PDF malware analysis — malicious · 9b176baba6ef405d

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 04:07:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 09ab6a32fb99855dc589a6f049b8defe SHA-1: 5399c4be01a46115ca081f02897eba6a8956aa1d SHA-256: 9b176baba6ef405d046cc81b16a40ee5e23c65d1aa0a627c96ed9d121c0eee9c

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 6

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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-hack-tool-generator-game-hack PDF link annotation
- https://www.andhrarealty.in/uploaded_files/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/hwo-to-get-free-robux-with-out-hacks-or-illeagley_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- https://www.andhrarealty.in/uploaded_files/userfiles/files/coin-master-hack-mod-apk-2021-download_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_off00005659.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5659	25996 bytes
SHA-256: `a1f9ae13c1963749f443c1bb08c026fae5d0290896591df0da23257533b0f6a7`
`font_01_sfnt_off0000928c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x928C	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009c3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C3E	17788 bytes
SHA-256: `0f526e1abc45333298d61d2ffbd228c521fd862e0b4d0d4d8e01ed873be913f0`

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