PDF malware analysis — malicious · 54b12a9238ec3ceb

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 04:09:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ad4f6cd4ba28228c96fab2377ba0f389 SHA-1: 0878e085a927994af67be338323345b1cf195b13 SHA-256: 54b12a9238ec3ceb8cfd9395051fb2be93e79915638298eb0863d0737d588026

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links to other PDF files, suggesting a link farm or content aggregation strategy. The document body and embedded URLs promote free game items and hacks, indicating a lure for users to click through to potentially malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.
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/479516143/minecraft-nintendo-switch-digital-code-free-game-hack
- https://jdlgroup.ca/images/roblox-free-models_GM431946152.pdf
- https://jdlgroup.ca/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdf
- https://jdlgroup.ca/images/coin-master-hack-no-human-verification-2021_GM406889139.pdf
- https://jdlgroup.ca/images/coin-master-free-spin-app-apk_GM406889139.pdf
- https://jdlgroup.ca/images/coin-master-free-spins-ios-app_GM406889139.pdf
- https://jdlgroup.ca/images/get-free-spins-coin-master-2021_GM406889139.pdf
- https://jdlgroup.ca/images/wurst-commands_GM479516143.pdf
- https://jdlgroup.ca/images/can-you-hack-coin-master_GM406889139.pdf
- https://jdlgroup.ca/images/how-to-get-a-free-minecraft-account_GM479516143.pdf
- https://jdlgroup.ca/images/daily-coin-master-free_GM406889139.pdf
- https://jdlgroup.ca/images/free-robux-apps-that-work_GM431946152.pdf
- https://jdlgroup.ca/images/coin-master-extra-spins_GM406889139.pdf
- https://jdlgroup.ca/images/how-to-hack-minecraft-pe_GM479516143.pdf
- https://jdlgroup.ca/images/free-spins-on-coin-master-2021_GM406889139.pdf
- https://jdlgroup.ca/images/rbxcity-free-robux_GM431946152.pdf
- https://jdlgroup.ca/images/coin-master-2021-free-spins-link_GM406889139.pdf
- https://jdlgroup.ca/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
- https://jdlgroup.ca/images/how-to-get-free-minecraft-windows-10_GM479516143.pdf
- https://jdlgroup.ca/images/free-robux-no-verification-no-survey_GM431946152.pdf
- https://jdlgroup.ca/images/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a6c.bin` `ad70ba871f83b2df265aa2fe7c63545b2cae5d6b1dffe7f741eb5f09a968c0c6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A6C	24420 bytes
`font_01_sfnt_off000081cc.bin` `39428c206c609bf194df99e48b3a05aaca79100e1a0a860ab3e065a57b3738de`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81CC	18744 bytes

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