PDF malware analysis — malicious · 8d118904e56e3110

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 09:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 4e87a79616e87abb4daf238450d1db84 SHA-1: 2b4a6abc43a3fd9fcff0f25f9cb8e31c48059d3f SHA-256: 8d118904e56e3110eed4e8e1ebc9b789a6eaa5a58152bf125191d5920a7ecda9

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and rewards, indicating a link farm designed to attract users. One embedded URI, http://netcdn.tw/app/431946152/oprewards-login-game-hack, is likely the primary lure for credential harvesting or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/oprewards-login-game-hack PDF link annotation
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/coin-master-heaven_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-robux-redeem-code-2021_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/le-jeux-du-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/piano-hack-roblox-download_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/hacks-for-roblox-jailbreak-noclip-18_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-v3rmillion-site-v3rmillionnet_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-android_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/roblox-sad-cheating-story-albert-he-cried-on-video_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-everything-free-on-roblox-2021-april_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-unlimited-robux-and-tix_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
`font_00_sfnt_off00002ff0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF0	21928 bytes
SHA-256: `1abdceebca7776caa324cc53ae139c9aef1c8b692fdec244d70323b894bb4c0f`
`font_01_sfnt_off0000605e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x605E	18680 bytes
SHA-256: `045e49a4c4c31e0b2cb524b946194a47b78cf6c5b310be207d27975ae3ba71fa`

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