PDF malware analysis — malicious · 502ada91cf253a0f

MALICIOUS

PDF

45.0 KB Created: 2021-05-12 04:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: fae2e8fd6ec83ea44e5100b061cec986 SHA-1: 40a982be535ed4ad9f5a34230d69dd80c63cb41d SHA-256: 502ada91cf253a0f6f2a68868c58a5cef0b548053b9772a3171f86b7bf45926d

110 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various game-related hacks and free items. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. The presence of urgency language and a visual download button lure suggests an attempt to trick the user into clicking these links. While no scripts were explicitly extracted, the PDF structure itself can embed JavaScript, and the overall pattern indicates a likely attempt to redirect users to malicious content or download further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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/431946152/free-roblox-clothes-for-your-avatar-game-hack PDF link annotation
- http://kovroff.com.ua/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/minecraft-for-free-games_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004619.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4619	24572 bytes
SHA-256: `fbaad957e0303c06470f1b0a56f48e228e4b717f3b9422662093db9207c5999b`
`font_01_sfnt_off00007e6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E6F	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00008b81.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B81	18860 bytes
SHA-256: `1761c8fbdaafa52a42c2d9c8dd0fbea25e5bec314d4deea8139da4bd569234ce`

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