PDF malware analysis — malicious · 4aed6767fcc09418

MALICIOUS

PDF

47.9 KB Created: 2020-08-29 23:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e8df266090af98cb2248fe85f2f2b13 SHA-1: e1478e9f086ab464b1400481944ae9bb2588c6dc SHA-256: 4aed6767fcc09418031a6d0c360f57e04b9a47b9ca791911d2802ee12afbaec0

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=simple+past+and+past+continuous+exercises+to+print'. This URL is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to this URL, reinforcing its role in the attack. The ML classifier also 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.ru/wix?keyword=simple+past+and+past+continuous+exercises+to+print
- https://static.usrfiles.com/ugd/b8c837_d4331bf6850348ae97cdea7eee0664fe.pdf
- https://static.usrfiles.com/ugd/b8c837_43c840659fd2480593c52aa8e440cea8.pdf
- https://static.usrfiles.com/ugd/b8c837_d8a6eea39b3548129961693f11e0ba8b.pdf
- https://static.usrfiles.com/ugd/26481d_bce66115f38849e2acdf4e11e1db85ed.pdf
- https://cdn.shopify.com/s/files/1/0437/0874/3834/files/fallout_4_sex_change.pdf
- https://cdn.shopify.com/s/files/1/0434/2526/7877/files/cma_part_1.pdf
- https://cdn.shopify.com/s/files/1/0428/6437/8022/files/kulimakixem.pdf
- https://cdn.shopify.com/s/files/1/0431/6574/5314/files/tascam_dp-_006_manual.pdf
- https://cdn.shopify.com/s/files/1/0448/4536/7453/files/yoga_health_and_physical_education_in_telugu.pdf
- https://cdn.shopify.com/s/files/1/0430/1216/1685/files/63346769395.pdf
- https://cdn.shopify.com/s/files/1/0429/6104/3605/files/bonevedakafepiremapatifew.pdf
- https://cdn.shopify.com/s/files/1/0430/8582/4164/files/getugimasewenej.pdf
- https://cdn.shopify.com/s/files/1/0435/7187/1912/files/saruromibex.pdf
- https://cdn.shopify.com/s/files/1/0431/6859/6117/files/momazujodube.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007008.bin` `f3f2fcd6d4a64b93170532f135859742e30288f2f85f58c6fb862c1ed1c0cd60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7008	5272 bytes
`font_01_sfnt_off000081ca.bin` `7ac31e19014609a8f1ec26462308971c01b058935b9b4222b44d4a5da0ccb3dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81CA	10012 bytes
`font_02_sfnt_off0000a41a.bin` `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA41A	4324 bytes

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