PDF malware analysis — malicious · 5747b0d195c93f0b

MALICIOUS

PDF

51.7 KB Created: 2020-08-04 01:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd66d46182a0ff161192103081c47a23 SHA-1: 56371fa8aa14536977734f012efe5285c265324b SHA-256: 5747b0d195c93f0b6601f26a5584228b42bd359d84406e42b7523ca321b57d99

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, indicating an attempt to lure users to malicious content. The document body, though heavily obfuscated, contains the target URL. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a fake PDF download.

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/pify?keyword=problem+solving+101+ken+watanabe+free+pdf
- http://files.beyondbonesapparel.com/uploads/1/3/1/4/131408017/xasusorajakanuja.pdf
- http://bejasezuz.daguerreotypesforsale.com/uploads/1/3/0/7/130776054/dugojufatiw-gipuvoku.pdf
- http://files.electroyelizondo.com/uploads/1/3/1/8/131872273/7551792.pdf
- https://cdn.shopify.com/s/files/1/0428/3056/1436/files/kogajijadite.pdf
- https://cdn.shopify.com/s/files/1/0431/9058/3464/files/arrow_theme_song.pdf
- https://cdn.shopify.com/s/files/1/0428/6981/7511/files/pakime.pdf
- https://cdn.shopify.com/s/files/1/0432/3760/5544/files/60872266588.pdf
- https://cdn.shopify.com/s/files/1/0429/9476/1877/files/wewifexunosolamupiw.pdf
- https://cdn.shopify.com/s/files/1/0439/4795/0248/files/95275647864.pdf
- https://cdn.shopify.com/s/files/1/0431/3792/5269/files/46810537364.pdf
- https://cdn.shopify.com/s/files/1/0436/7394/4217/files/adobemaker_for_word.pdf
- https://cdn.shopify.com/s/files/1/0429/8414/5049/files/60992167398.pdf
- https://cdn.shopify.com/s/files/1/0449/2463/3243/files/t2_ankle_arthrodesis_nail.pdf
- https://cdn.shopify.com/s/files/1/0438/5921/4496/files/63893634172.pdf
- https://cdn.shopify.com/s/files/1/0431/5018/0503/files/88802257823.pdf
- https://cdn.shopify.com/s/files/1/0432/3957/1616/files/kick_it_in_the_sticks_lyrics.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_off00007744.bin` `370b63e99b3bc2c1d8b7a2bfc1693e0257dccade0e64e814f912f9e1c3af29e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7744	6548 bytes
`font_01_sfnt_off0000879a.bin` `28ebb8640159473ec2f4fe8414c4a3810d50974759dfe81ebcad6b8db4f7ac4e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x879A	5912 bytes
`font_02_sfnt_off00009bc3.bin` `161813898092f22a25a8e7e68edf30a870043b03eb69f93a4bd4d9ab33d03107`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BC3	10684 bytes

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