PDF malware analysis — malicious · a63ce001365c3126

MALICIOUS

PDF

41.1 KB Created: 2021-05-13 15:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d5ab8a439027df615030a39aab785d74 SHA-1: f7f2ea02a7f186e2848974bc362593ce2c6eff07 SHA-256: a63ce001365c3126de7630cad1bd03e1691c4ecb06ae2800b38526a81395fbbf

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO link farms. The primary URL, https://netcdn.xyz/app/406889139/freecoins-game-hack, suggests a lure for game-related cheats or hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm points towards a campaign to drive traffic to potentially malicious or ad-heavy sites.

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/406889139/freecoins-game-hack
- https://zapoj-kharkov.com.ua/images/coin-master-free-spin-and-coin-links_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/is-roblox-free-on-nintendo-switch_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/coin-master-hack-cydia_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/free-spins-coin-master-links-2021_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/coin-master-free-spins-links-2021_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/how-to-get-free-robux-no-verification_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/free-robux-hack-us_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/coin-master-hack-spins-download_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/free-roblox-card_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/free-robux-generator-2021_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/how-to-get-free-coins-for-coin-master_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/free-minecraft-java-edition-codes_GM479516143.pdf
- https://zapoj-kharkov.com.ua/images/how-to-get-free-robux-2021_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/roblox-premium-free_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
- https://zapoj-kharkov.com.ua/images/heroes-online-roblox_GM431946152.pdf
- https://zapoj-kharkov.com.ua/images/free-minecraft-for-kids_GM479516143.pdf
- https://zapoj-kharkov.com.ua/images/spin-coin-master-free_GM406889139.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_off00004985.bin` `3ce44c17a7e18a262d8a51fd0afc6fea097dd6a5e9857dec068b8160c63f81cf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4985	24404 bytes
`font_01_sfnt_off00008125.bin` `b7451c9dd0ac59d2b5cb55b76db2f7cf076c87adc9efeb70e2d733c8c551e0a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8125	17380 bytes

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