PDF malware analysis — malicious · cad94d3e15ef44ac

MALICIOUS

PDF

68.1 KB Created: 2020-08-15 07:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 654b9d3b7e1f2b25c48e356666fcfae1 SHA-1: c1c9344b33f712ed2960c402f907095db71eec76 SHA-256: cad94d3e15ef44ac8d990b6596c9b026f4a62a87b3c9f1b4e26e8b4770dc0ee9

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/wb?keyword=ethiopia%20gdp%202017%20pdf'. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of a phishing or malware delivery attempt.

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.ru/wb?keyword=ethiopia%20gdp%202017%20pdf
- http://files.edmerrison.com/uploads/1/3/1/4/131408546/8293145.pdf
- http://files.clintconradauthor.com/uploads/1/3/1/4/131437246/9df487b9.pdf
- https://cdn.shopify.com/s/files/1/0428/0595/2671/files/83032239143.pdf
- https://cdn.shopify.com/s/files/1/0434/5836/3544/files/85049790124.pdf
- https://cdn.shopify.com/s/files/1/0437/1048/0537/files/maneboxafodifumitij.pdf
- https://cdn.shopify.com/s/files/1/0437/8230/8002/files/immutablemap_vs_hashmap_performance.pdf
- https://cdn.shopify.com/s/files/1/0450/6599/4392/files/buffett_books.pdf
- https://cdn.shopify.com/s/files/1/0437/1388/8424/files/vewekoxugamigizoxe.pdf
- https://cdn.shopify.com/s/files/1/0436/0614/7229/files/356879662.pdf
- https://cdn.shopify.com/s/files/1/0436/9884/7896/files/81832112055.pdf
- https://cdn.shopify.com/s/files/1/0434/0364/0984/files/trumpet_voluntary_organ_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0428/9203/4211/files/medical_applications_of_nanotechnology.pdf
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/new_bus_simulator_games.pdf
- https://cdn.shopify.com/s/files/1/0437/3915/2535/files/wejeve.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b029.bin` `1e72a57f8fb159b0eee19b1b1c56e3bffdddbeb4bcd7471f54c180d3e7faa849`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB029	6964 bytes
`font_01_sfnt_off0000c1cd.bin` `16405c5fe5c6717e0424859f301370bff90d7acdfa21efe989e754fd578e5362`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1CD	5360 bytes
`font_02_sfnt_off0000d41a.bin` `78c8ea7841e4b9c0b5eecb6d817be043885e35c1df9c908e35d4177d0e4f3bef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD41A	15028 bytes

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