PDF malware analysis — malicious · 89b1aada49ff4145

MALICIOUS

PDF

41.2 KB Created: 2020-08-30 09:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04f85660a806807f85df39f9d3b523a6 SHA-1: 5420d22b85eb227ac2d11c21e98f028c83472768 SHA-256: 89b1aada49ff414517e178297d53168709d49e69b0c6a95e82cfac7ef3affaf3

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 link farm. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=probability+and+statistics+with+r+for+engineers+and+scientists+akritas, which is associated with malicious redirector infrastructure. The presence of numerous embedded links, many pointing to Shopify domains, suggests a tactic to obscure the ultimate malicious destination and potentially leverage benign-looking domains for distribution.

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=probability+and+statistics+with+r+for+engineers+and+scientists+akritas
- https://cdn.shopify.com/s/files/1/0432/0778/6654/files/dubigidapisikege.pdf
- https://cdn.shopify.com/s/files/1/0434/9270/4408/files/webuzigasagekamefipo.pdf
- https://cdn.shopify.com/s/files/1/0437/5203/0357/files/a_study_of_history.pdf
- https://cdn.shopify.com/s/files/1/0429/3967/8886/files/fuwoluvor.pdf
- https://cdn.shopify.com/s/files/1/0435/6263/1326/files/xowobuselekomagor.pdf
- https://cdn.shopify.com/s/files/1/0434/9224/5656/files/wedalagovakaratuwawevuxat.pdf
- https://cdn.shopify.com/s/files/1/0431/5627/5360/files/remagegefomaxisowijini.pdf
- https://cdn.shopify.com/s/files/1/0440/1758/2230/files/37507724577.pdf
- https://cdn.shopify.com/s/files/1/0462/2739/0615/files/the_leopard_gecko_manual.pdf
- https://cdn.shopify.com/s/files/1/0434/2913/4501/files/rufoxiwimupojegex.pdf
- https://cdn.shopify.com/s/files/1/0433/2191/7598/files/baithungi_piya_bolero_mein_ringtone.pdf
- https://cdn.shopify.com/s/files/1/0430/0914/7043/files/30354232492.pdf
- https://cdn.shopify.com/s/files/1/0431/2009/9488/files/totibekederavu.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_off0000531c.bin` `e856e9e7580493954ff7155d6a7ba40ce4b0c73d9ac585b2cbb4ae231f22e3ee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x531C	5468 bytes
`font_01_sfnt_off000065b7.bin` `cc9dec85c3f42784ea63296ec184cbd0ef3d3ecb8f468e90862b150dc67cbcfd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65B7	10440 bytes
`font_02_sfnt_off00008958.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8958	4324 bytes

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