PDF malware analysis — malicious · 2e85dfc1460c8cef

MALICIOUS

PDF

45.2 KB Created: 2021-06-10 15:25:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 9817333b6992c7eb9a6af72b10cb968a SHA-1: 22aeae8a455d5c1909dc16fd3dbf870d370a04d5 SHA-256: 2e85dfc1460c8cef2c1317079172089ef1fef350e19be4eecfdf6bbfb5174a32

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 0.9864

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.tw/app/431946152/roblox-arsenal-hack-script-game-hack PDF link annotation
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/infinite-jump-hack-for-roblox-devs_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/accounts-with-robux-free-rocash_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/roblox-hack-mm2_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/go-through-walls-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/how-to-hack-roblox-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/synapse-free-download-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/dbfa-hacked-roblox_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/roblox-mobile-hacks-4-free-robux_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/pastebin-robux-free-birthday-reward-7_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/roblox-download-free-on-ps4_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/roblox-hack-apk-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/free-robux-card-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
- https://www.ecegrants.on.ca/wp-content/uploads/fsqm-files/hack-de-roblox-jailbreak-descargar_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
`stream_004_off000052a6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x52A6	25820 bytes
SHA-256: `88028ff34c140424c95de0148ae70746a641eb08888a60e7458feb669b3ccb6d`
`font_01_sfnt_off00008d1e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D1E	18580 bytes
SHA-256: `886e0282567bb3b9aa294a0fa6e2920dc506827762190c173244b50fd9351de6`

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