PDF malware analysis — malicious · b0f888f44840b093

MALICIOUS

PDF

56.3 KB Created: 2020-08-11 06:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b3501ff9ff26cabb164722f1736a502 SHA-1: f8ec4715556acc45aae22563b9ff4cab14cd761e SHA-256: b0f888f44840b093d7d90b2654219f93903ce964e053905b1bafb6a1f5e5ca76

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary malicious redirector URL identified. The document body, though heavily obfuscated, contains the same malicious URL and numerous other links, suggesting a lure to download further content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ttraff.cc/pify?keyword=chaupai+sahib+path+with+meaning+in+punjabi+written+pdf
- http://files.relationshipmartech.com/uploads/1/3/0/8/130814193/250666.pdf
- http://files.cccaabbrefs.com/uploads/1/3/0/7/130740256/8886256.pdf
- http://fulujemaw.abbasgrotto.com/uploads/1/3/2/6/132681333/79a3a417e967f0.pdf
- https://cdn.shopify.com/s/files/1/0431/6676/1120/files/xadexuwewipibiduba.pdf
- https://cdn.shopify.com/s/files/1/0431/1403/7397/files/bird_scooter_locations.pdf
- https://cdn.shopify.com/s/files/1/0435/2255/6058/files/3875862922.pdf
- https://cdn.shopify.com/s/files/1/0434/5122/0120/files/robotic_process_automation_report.pdf
- https://cdn.shopify.com/s/files/1/0430/4489/6925/files/nolufupujaripomodedifora.pdf
- https://cdn.shopify.com/s/files/1/0434/7166/7360/files/zuvusemufuw.pdf
- https://cdn.shopify.com/s/files/1/0430/5757/8138/files/bible_pictionary_cards.pdf
- https://cdn.shopify.com/s/files/1/0429/4646/1855/files/tonopepulaba.pdf
- https://cdn.shopify.com/s/files/1/0435/9972/4702/files/ikea_branding_strategy.pdf
- https://cdn.shopify.com/s/files/1/0433/1775/6062/files/ultimate_spider_man_comics_download.pdf
- https://cdn.shopify.com/s/files/1/0437/7352/6178/files/outkast_ms_jackson_lyrics.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007a67.bin` `b25a696aa4d36e958924fa51692ce79a25f6826091fd5a95ab0d534df31933c1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A67	5636 bytes
`font_01_sfnt_off00008d76.bin` `6ce3ed3d0cf168fbf74d6eb321148d5efc31cda11559831b77020f7d4c9f4c8c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D76	3740 bytes
`font_02_sfnt_off000098f0.bin` `540a8af0eeb7d4daeed1d8d666bca2903a70dc10f1cd86ac706fbfdf9c8bc77c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98F0	6732 bytes
`font_03_sfnt_off0000b05b.bin` `341ffc56d194f456e39f5ed22f862fe17c93a90ae6d0f7cca5eed4eb2a606352`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB05B	10156 bytes

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