PDF malware analysis — malicious · 091d22b977a98315

MALICIOUS

PDF

50.0 KB Created: 2021-06-03 05:46:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 86fff83235d6bd911d379b3a7388962b SHA-1: 6a9b7ff2435ad3ae3c69b582837a0101aa312239 SHA-256: 091d22b977a98315d0024e7986b95a0c3262bd9c5ca47e59959222f11b8fabd7

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, many of which are part of a link farm designed to direct users to potentially malicious content. The document's content and the nature of the linked URLs suggest a lure for downloading unauthorized software or engaging in scams related to popular games. The ML classifier also strongly indicated maliciousness.

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.
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/free-coins-coin-master-today-game-hack
- https://privatearrangements.co.nz/public/files/make-your-own-minecraft-server-free_GM479516143.pdf
- https://privatearrangements.co.nz/public/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdf
- https://privatearrangements.co.nz/public/files/getrobux-ninja_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/coin-master-free-spins-link-2021-app_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/roblox-studio-free_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/robuxglobalcom_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/how-to-get-a-free-minecraft-account_GM479516143.pdf
- https://privatearrangements.co.nz/public/files/free-robux-com-roblox_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/is-it-possible-to-hack-coin-master_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/coin-master-spin-hack-no-human-verification_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/free-spins-on-coin-master_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/funbloxxyz-free-robux_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/promo-codes-to-get-free-robux_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/how-to-get-more-robux_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/free-spins-coin-master-2021_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/roblox-hack-download_GM431946152.pdf
- https://privatearrangements.co.nz/public/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
- https://privatearrangements.co.nz/public/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005206.bin` `24af6ad59087fb500313952f2dc4d12848ec60709d845655e3c85af57678b905`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5206	25804 bytes
`font_01_sfnt_off00008d22.bin` `e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D22	8676 bytes
`font_02_sfnt_off0000a1ad.bin` `85a7a6543eb7f59a149e6876aabd32521cb1fc93bcbc39754761d1a657ff29d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA1AD	18064 bytes

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