PDF malware analysis — malicious · 9de73a86ca70693f

MALICIOUS

PDF

73.6 KB Created: 2020-08-31 10:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b8290cba4e60a553e6a322e2b0c58327 SHA-1: 83748f93ce6b942db720cab5a0752c17737afd88 SHA-256: 9de73a86ca70693f6ffefe5de402e415be92035d4214074654c9767029fa0dc1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. The primary malicious URL identified is ttraff.com, which is known to host redirectors. The document body contains garbled text but includes the malicious URL and several benign-looking Shopify URLs, likely part of the link farm.

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.com/wix?keyword=regular+pentagon+angles
- https://cdn.shopify.com/s/files/1/0432/2073/0011/files/ralomofovamotuxitawesaka.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/muzaloxebomasu.pdf
- https://cdn.shopify.com/s/files/1/0432/9593/2584/files/monochrome_laser_printer_test_page.pdf
- https://cdn.shopify.com/s/files/1/0433/2270/4030/files/37693014018.pdf
- https://cdn.shopify.com/s/files/1/0432/9462/1862/files/port_san_luis_fish_report.pdf
- https://cdn.shopify.com/s/files/1/0435/4283/9455/files/apbn_2020_disahkan.pdf
- https://cdn.shopify.com/s/files/1/0429/2496/6044/files/pitiludusikejomevu.pdf
- https://cdn.shopify.com/s/files/1/0464/7524/7784/files/blank_christmas_party_templates.pdf
- https://static.usrfiles.com/ugd/d01287_fcd0adf7d16346bb9d11c7d4300060cf.pdf
- https://static.usrfiles.com/ugd/7dd30d_a8cf1e7313aa45969bc590a3e142151b.pdf
- https://static.usrfiles.com/ugd/227d0f_7b62b12ecd664e4b896eda27e0c89fbd.pdf
- https://static.usrfiles.com/ugd/67e251_b3af8fec588b4b8ab6c507cf44caaa0d.pdf
- https://static.usrfiles.com/ugd/67e251_594d6142a73f4afd816a247f11069537.pdf
- https://static.usrfiles.com/ugd/136d07_365e318bd7d7437481ef427e9389a39e.pdf
- https://static.usrfiles.com/ugd/bdeb4c_89735039cfd348aa8900329a1f31d0d0.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_off0000bf17.bin` `9b96f9e85394b7bdde72f35c0af1a5a8fba820da5664fa0c07a3e102b35cfc1d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF17	4996 bytes
`font_01_sfnt_off0000d02a.bin` `4107cd86297b534f87e6724aa6c173ccaa5c735f7aec567129575efc03397f64`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD02A	16160 bytes
`font_02_sfnt_off00010406.bin` `f4fa0d3cee64843fe0c60bab5b730927ef4dd91cd2c415cde2f85921d1cef429`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10406	16232 bytes

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