PDF malware analysis — malicious · 4cf527ff2224bae3

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 10:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5797e7b4d11766e5d0828b4a1eb2b215 SHA-1: a1e30d0342779ff61315e7863de15434641b7bf9 SHA-256: 4cf527ff2224bae37fc393833fae4bcb0f68861d957032ef5c2874718f1594ea

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm for SEO manipulation. One prominent link, 'https://ttraff.ru/pify?keyword=how+to+calculate+ammeter+reading+in+a+circuit+pdf', is identified as a malicious redirector. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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/pify?keyword=how+to+calculate+ammeter+reading+in+a+circuit+pdf
- http://files.hcmsystemslimited.co.uk/uploads/1/3/0/8/130814623/datetofoxubusinapas.pdf
- http://files.easttntours.com/uploads/1/3/2/8/132814972/1697366.pdf
- http://files.sharibatheactor.com/uploads/1/3/2/6/132681579/mikuvusutovavi.pdf
- http://medowuf.sweetreesmaple.com/uploads/1/3/1/6/131606186/sitim_piguwijaruru_pewoni.pdf
- http://kunefo.guestchefdetroit.com/uploads/1/3/1/4/131453247/685c59e5cedbd5.pdf
- https://cdn.shopify.com/s/files/1/0431/4293/8784/files/1155985658.pdf
- https://cdn.shopify.com/s/files/1/0428/9291/8937/files/jizitolijirigi.pdf
- https://cdn.shopify.com/s/files/1/0437/7047/8746/files/semantic_ui_cdn.pdf
- https://cdn.shopify.com/s/files/1/0435/1338/1028/files/62537007726.pdf
- https://cdn.shopify.com/s/files/1/0429/2293/4435/files/77095723956.pdf
- https://cdn.shopify.com/s/files/1/0428/7243/8947/files/28139263803.pdf
- https://cdn.shopify.com/s/files/1/0433/2837/2904/files/ca_icap_books.pdf
- https://cdn.shopify.com/s/files/1/0440/2036/7510/files/fidagen.pdf
- https://cdn.shopify.com/s/files/1/0431/4827/9957/files/fozewanoso.pdf
- https://cdn.shopify.com/s/files/1/0433/7978/5886/files/jufor.pdf
- https://cdn.shopify.com/s/files/1/0434/3123/1655/files/vitamin_b6_deficiency.pdf
- https://cdn.shopify.com/s/files/1/0433/0881/0398/files/newafigekezapewewonirodev.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/
- https://cdn.shopify.com/s/files/1/0435/1338/1028

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006dee.bin` `51c255aa1382e1b559c6d63cbf80f2ce521dfd3261f6a596b5e5496a64d76c48`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DEE	5352 bytes
`font_01_sfnt_off00008020.bin` `df8bf800ba76715af2f55bc38ee1b2c745e4d3618e378d03b8abfa412dab2d3a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8020	9620 bytes

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