PDF malware analysis — malicious · f1cbc9642d4955ad

MALICIOUS

PDF

42.5 KB Created: 2021-05-18 04:15:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d798e4382692b2bb39794c19cc4116ad SHA-1: 6bdc1eee1ca1bbd3bae684229048e144beca58fd SHA-256: f1cbc9642d4955ad9a6ca02a7dbd88d2ce43ad4e4a1d93dfc09c3a63a0e677c1

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains lures for free game items and virtual currency, directing users to external URLs. The presence of an embedded URI and multiple external links suggests an attempt to redirect users to malicious sites for downloading further payloads or engaging in phishing. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious download lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.xyz/app/431946152/free-promo-codes-for-robux-game-hack
- https://bancroftandsons.com/images/free-roblox-accounts-dantdm_GM431946152.pdf
- https://bancroftandsons.com/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
- https://bancroftandsons.com/images/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdf
- https://bancroftandsons.com/images/minecraft-games-free-download_GM479516143.pdf
- https://bancroftandsons.com/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
- https://bancroftandsons.com/images/free-spins-and-coins-coin-master-2021_GM406889139.pdf
- https://bancroftandsons.com/images/coin-master-hack-generator-tool_GM406889139.pdf
- https://bancroftandsons.com/images/buy-robux-free_GM431946152.pdf
- https://bancroftandsons.com/images/coin-master-hack-2021_GM406889139.pdf
- https://bancroftandsons.com/images/coin-master-free-spins-link-download-hack_GM406889139.pdf
- https://bancroftandsons.com/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdf
- https://bancroftandsons.com/images/coin-master-daily-free-spins-link-today-blog_GM406889139.pdf
- https://bancroftandsons.com/images/minecraft-free-reddit_GM479516143.pdf
- https://bancroftandsons.com/images/rbl-gg-free-robux_GM431946152.pdf
- https://bancroftandsons.com/images/coin-master-gold-cards-hack_GM406889139.pdf
- https://bancroftandsons.com/images/coin-master-free-spin-codes_GM406889139.pdf
- https://bancroftandsons.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdf
- https://bancroftandsons.com/images/javascript-free-robux_GM431946152.pdf
- https://bancroftandsons.com/images/hack-robux_GM431946152.pdf
- https://bancroftandsons.com/images/roblox-hack-codes_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000048f8.bin` `80f2834eb22f5f2b87434346b99001560eafb7cd07cfe7a7da4e85bc060ab758`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x48F8	25540 bytes
`font_01_sfnt_off000082eb.bin` `f71c03fba91376071fb946d88a6d16afcc2c6d61aa4ef632c3571b6200829f5d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82EB	18604 bytes

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