PDF malware analysis — malicious · 281ca552327fcf27

MALICIOUS

PDF

63.5 KB Created: 2020-08-28 23:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5e7a56f6d1248f5e02df37c1201608a9 SHA-1: e0e738acea8a0fcb7c6e8be4c43b7735f1c236b6 SHA-256: 281ca552327fcf273d4d641cf03fac48c026d9820dba89218ec76fdbcd2b7a22

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One of these URLs, 'https://ttraff.com/wix?keyword=10+ejercicios+de+estequiometria+resu', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The presence of many links, including to Shopify domains, indicates an attempt to obscure the malicious destination and potentially leverage SEO tactics.

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.com/wix?keyword=10+ejercicios+de+estequiometria+resu
- https://cdn.shopify.com/s/files/1/0433/4606/7621/files/82691024572.pdf
- https://cdn.shopify.com/s/files/1/0430/4361/8965/files/nilavigikutemu.pdf
- https://cdn.shopify.com/s/files/1/0428/8705/3475/files/anexar_facebook.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdf
- https://cdn.shopify.com/s/files/1/0431/9644/8917/files/98480974306.pdf
- https://cdn.shopify.com/s/files/1/0429/8702/8641/files/mesopajugow.pdf
- https://cdn.shopify.com/s/files/1/0435/2881/4741/files/kamixawovukew.pdf
- https://cdn.shopify.com/s/files/1/0463/2798/8385/files/free_knitting_stitches_guide.pdf
- https://static.usrfiles.com/ugd/b8c837_f2c2396210724176abdfc9fe94180e7e.pdf
- https://static.usrfiles.com/ugd/b8c837_6b6aa1f6836a47dfb7b7df5241736d61.pdf
- https://static.usrfiles.com/ugd/b8c837_83b72741332b4774bce30abf6f9c790c.pdf
- https://static.usrfiles.com/ugd/b8c837_9b89e0df680240afac0dccc363cee84e.pdf
- https://static.usrfiles.com/ugd/b8c837_9025036dbb73489ea427cea1acc51b50.pdf
- https://static.usrfiles.com/ugd/b8c837_b54901a16fa140ae866ad1d87633440b.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_off000094d6.bin` `9e0c1343f399c8e8dc9f44869686b5666f467618d2a3a8cd5fb9616235fd48b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94D6	5352 bytes
`font_01_sfnt_off0000a6dd.bin` `51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6DD	1800 bytes
`font_02_sfnt_off0000af6b.bin` `d796820b18784575a9f5826f495f8cb4601460bd7f562ec9ceb1d9b092ce8c42`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF6B	12264 bytes
`font_03_sfnt_off0000d731.bin` `273e468bfb7e16414bdd739f3d52889c52221027ef964892a2b8f293dafb3c0a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD731	16660 bytes

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