PDF malware analysis — malicious · 87e2406adb587cc3

MALICIOUS

PDF

46.7 KB Created: 2020-07-15 09:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 96b92d259e64e650cc8f9442d15b661b SHA-1: e1b29af8010d880778e0880fcb6b9f8a6603bd82 SHA-256: 87e2406adb587cc38f5702e30fd2358edc7851a196f61532afa6f4cfd99e0a30

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, indicative of a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a lure to external content, likely for malicious purposes. No scripts were extracted from this sample.

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/wb?keyword=conceptual%20graph%20in%20artificial%20intelligence%20pdf
- http://files.driveinbiblechurch.com/uploads/1/3/1/8/131856288/vebugajuboro.pdf
- http://files.leeclarkzumpe.com/uploads/1/3/0/7/130775859/noximujileja.pdf
- http://files.angelaadockter.com/uploads/1/3/1/1/131164472/ca020baf2c47517.pdf
- http://files.graveyardshifttv.com/uploads/1/3/1/4/131452872/929978.pdf
- http://files.gardentruenorth.com/uploads/1/3/0/7/130775677/butidemalokadofado.pdf
- http://files.iansturgess.co.uk/uploads/1/3/1/1/131164314/9444547.pdf
- https://fugebetowipo.files.wordpress.com/2020/06/64704993872.pdf
- https://bamidepe.files.wordpress.com/2020/07/77717400883.pdf
- https://mufabebovek.files.wordpress.com/2020/06/zoniserinami.pdf
- https://xasarev.files.wordpress.com/2020/06/69516062113.pdf
- https://tixuwujeseva.files.wordpress.com/2020/06/21972577827.pdf
- https://cdn.shopify.com/s/files/1/0432/9160/7190/files/nufukuvovuge.pdf
- https://cdn.shopify.com/s/files/1/0427/5086/9671/files/fujepejixilejuxixifu.pdf
- https://cdn.shopify.com/s/files/1/0430/0223/2983/files/gisulav.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/19953562333.pdf
- https://cdn.shopify.com/s/files/1/0431/5889/6802/files/35958281643.pdf
- https://cdn.shopify.com/s/files/1/0430/8851/1130/files/69169719498.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98908457197.pdf
- https://cdn.shopify.com/s/files/1/0430/0954/0257/files/39111385312.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006cf5.bin` `5c0f00c6ee88845d644acc8af1c306b3c756d2a8b00d87844304e331d625dc84`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CF5	5144 bytes
`font_01_sfnt_off00007e68.bin` `274d3d43f82ffbe5a46ec067ae40f8732a5b46e43c2eef1a7c1cd839fbc3c468`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E68	14796 bytes

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