PDF malware analysis — malicious · 07291332595fd786

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 04:54:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: b7c0554e2955f46c01ab94282f854d02 SHA-1: bfad9f4acea2051ad0dbcc45f3f0c05515ae6c17 SHA-256: 07291332595fd7864c98ecb3257c5725d391b234aedff7980f5281cf8a9335d8

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to attract users searching for game-related cheats and virtual currency. The ML classifier also strongly indicated maliciousness. The document body and extracted URLs indicate a lure for free game items, likely leading to malware downloads or further phishing attempts.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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.co/app/431946152/free-roblox-groups-no-owner-game-hack PDF link annotation
- http://bepquannhu.vn/upload/editor/files/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/get-robux-today_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/comment-avoir-des-robux-gratuit-sans-hack_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-robux-games-that-are-real_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/open-coin-master_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/hack-the-computer-roblox_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/hack-roblox-pc-aimbot-download_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/robux-hack-2021-real-no-human-verification_GM431946152.pdfIn PDF document text
- http://bepquannhu.vn/upload/editor/files/roblox-one-piece-millenium-stats-hack-script_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_off00002f13.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F13	21888 bytes
SHA-256: `d3e9606ff1ddd7c2ddb33d3bc27d05982f4d5447347475d413fbbebfac34685a`
`font_01_sfnt_off00005f67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F67	19128 bytes
SHA-256: `3f59a9ad1bbb4a5c9fd67e71cd94af3f7727d944e4c94637afc6b4d352844068`

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