PDF malware analysis — malicious · 71fe7e71005ef349

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 20:21:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: ceb637eddc4a5a96f20374cdf670541f SHA-1: d351fd74a46408f4641f11c12132c7986b384177 SHA-256: 71fe7e71005ef349efeaa4f385d1e334eb5567168896bfc87704d39d200046a1

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 cheats and downloads. The primary URL, http://netcdn.tw/app/479516143/minecraft-apk-free-download-game-hack, suggests a lure for downloading potentially malicious software disguised as game-related content. The ML classifier also flagged this PDF as malicious with high confidence.

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/minecraft-apk-free-download-game-hack PDF link annotation
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-roblox-without-downloading_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-gear-codes-for-roblox_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/easy-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/robux-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/code-hack-robux-pastebin_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/i-caught-my-boyfriend-cheating-on-me-roblox_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-free-items-glitch_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_off000031ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31FF	22340 bytes
SHA-256: `adbcc00921c8a66b2dd6ecf0df856fa9349e5e186f2c86dbf0d82d2212e25198`
`font_01_sfnt_off00006352.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6352	18924 bytes
SHA-256: `1de344d99f1e631699adb44c0f23fb2d6ffa0cf287341dc691753e7d540fe775`

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