PDF malware analysis — malicious · 2a1ff65f4c8626f2

MALICIOUS

PDF

62.3 KB Created: 2020-07-27 03:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b3423261ec878a9f3ce115497cc561b7 SHA-1: 3bf3d18f19b6b561a74b0a0bac3f1a480f0d0390 SHA-256: 2a1ff65f4c8626f2f9da8ec29fca344149b5bdb1d9d65db0d3443728512c3b97

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm hosted on Shopify, suggesting an attempt to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a likely phishing or malware distribution attempt.

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/pify?keyword=english+birthday+song++mr+jatt
- http://files.thestoryexploratory.com/uploads/1/3/1/6/131637640/c52f4.pdf
- http://files.meridianphysio.com/uploads/1/3/1/3/131379246/901782.pdf
- http://files.leonorigroup.com/uploads/1/3/0/8/130813317/kudetuv_newuvudo_dozonu.pdf
- http://files.dibbacityguide.com/uploads/1/3/1/6/131606674/jiziwagukizob.pdf
- http://files.upsydaisydesignstx.com/uploads/1/3/1/3/131380063/wusavudu-dikij.pdf
- https://cdn.shopify.com/s/files/1/0429/2981/5711/files/96175579670.pdf
- https://cdn.shopify.com/s/files/1/0430/3601/6802/files/81496608840.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
- https://cdn.shopify.com/s/files/1/0429/0763/1779/files/30446032260.pdf
- https://cdn.shopify.com/s/files/1/0427/9032/2342/files/12932679971.pdf
- https://cdn.shopify.com/s/files/1/0431/6954/6395/files/52975337394.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13503036424.pdf
- https://cdn.shopify.com/s/files/1/0440/1466/5878/files/sikerekozinamavoves.pdf
- https://cdn.shopify.com/s/files/1/0430/9073/9361/files/58853156977.pdf
- https://cdn.shopify.com/s/files/1/0431/1423/4016/files/43004460085.pdf
- https://cdn.shopify.com/s/files/1/0434/4443/7142/files/getovogowosepulakijibena.pdf
- https://cdn.shopify.com/s/files/1/0430/8008/9760/files/lajupivosawefodoxalasusa.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_off0000b317.bin` `f052d2779d0044a117673a62ffbf156b79b054ed583f1f6129f83e0d02fc6085`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB317	5184 bytes
`font_01_sfnt_off0000c486.bin` `5128384383572fb0a9efbeaf7574b19c324fda04c6197e7fb73be8c61b31a80a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC486	11440 bytes

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