PDF malware analysis — malicious · 8545930ce1529af3

MALICIOUS

PDF

50.3 KB Created: 2021-06-09 10:16:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 9110a4fc738961d5c4770eb418d839db SHA-1: c962296a1e183ab0ecfd7305e2cea968d318a22e SHA-256: 8545930ce1529af37eee9cb03c7e5c4b0a6bdbdeb2b79f1890bbaf50ecdf1d91

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a document body that promotes 'free Robux' and game hacks, indicating a phishing or scam lure. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of external links were generated, likely to manipulate search results and drive traffic to malicious or scam sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/how-to-donate-robux-for-free-game-hack PDF link annotation
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-with-ouout_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
- https://www.shopinkart.co.in/uploaded_files/userfiles/files/coin-master-hack-pro-gamers_GM406889139.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
`stream_004_off0000516e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x516E	26532 bytes
SHA-256: `a4aa075ad6a70f82df00224c2959f7c90750354bac5a441973173b597add0a9b`
`font_01_sfnt_off00008fdd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FDD	6932 bytes
SHA-256: `1d3c12ae50aa58b0d7f9edff1f533afe443cfde2247226ed5947ea32ef6b8eb6`
`font_02_sfnt_off0000a0ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA0AD	18676 bytes
SHA-256: `9a671092c800b5f9c658cb2ac362d5538f94dde3ca1c18ecd2698289211509cf`

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