PDF malware analysis — malicious · ae413ad84484448d

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 09:17:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 43e56da99fbf975803bcc38a25335d85 SHA-1: ebfff06725ce735ba71877b997d27a31e30322db SHA-256: ae413ad84484448dbc401f0fb595192fb667b2b83696d3e51de30b484e830990

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are structured as PDF link farms, suggesting an attempt to drive traffic to potentially malicious or unwanted content. The document body and extracted URLs indicate a lure related to free game items and hacks, such as Minecraft addons and Robux. The ML classifier 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/479516143/free-minecraft-addons-game-hack PDF link annotation
- https://www.iosas.info/uploaded_files/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/click-to-claim-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/pokemon-go-free-shiny-eevee_GM1094591345.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/daily-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-roblox-players_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/free-robux-no-surveys-or-offers_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-hack-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-free-rixty-account-live_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/serena-ryder-wild-and-free-id-roblox-code_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-roblox-games-2021_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-any-gamepass-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/lastrick-com-coin-master-hack_GM406889139.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_off00003291.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3291	22012 bytes
SHA-256: `1f1b1ff19e00c903258c7a02ec2dac42a11cb1e7651b6d39a90d3a5f07f479b6`
`font_01_sfnt_off000062f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62F3	18172 bytes
SHA-256: `f2b502c1f7fdc586459d018faaa780361b03439c740158c4dfbe15d97db793b4`

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