PDF malware analysis — malicious · df668a17d2a0eef3

MALICIOUS

PDF

37.2 KB Created: 2020-08-12 22:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 973b9ad50811603e7b9969f5bfa63a86 SHA-1: a372a6ea79204964e4477cb5801c6d3d0792fa18 SHA-256: df668a17d2a0eef32f326bdd453401d00c62aee275a415886e4ec1b22698044e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate PDF downloads, but one of the primary links redirects to a malicious domain (ttraff.cc). This indicates a social engineering tactic to trick users into downloading potentially harmful files. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded malicious redirector is a high-priority IOC.

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.cc/pify?keyword=b%25C3%25ADblia+cat%25C3%25B3lica+pdf+download
- http://bojagap.andrewbishopmd.com/uploads/1/3/0/7/130776483/7292403.pdf
- http://files.raphastar.com/uploads/1/3/0/7/130775918/81aa9810fbb3.pdf
- http://files.adamlock.net/uploads/1/3/1/6/131606533/e569d0.pdf
- http://zuror.prestonsweeps.co.uk/uploads/1/3/0/7/130775448/puxuwal.pdf
- http://rololotum.crystalvielula.com/uploads/1/3/0/7/130775320/seperatas.pdf
- https://cdn.shopify.com/s/files/1/0436/7689/3334/files/98043412889.pdf
- https://cdn.shopify.com/s/files/1/0431/3546/7669/files/3916152845.pdf
- https://cdn.shopify.com/s/files/1/0433/7503/4520/files/fusionner_deux_documents_en_un.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
- https://cdn.shopify.com/s/files/1/0435/5391/5043/files/voveje.pdf
- https://cdn.shopify.com/s/files/1/0432/3662/2498/files/riwiguwulimanakigin.pdf
- https://cdn.shopify.com/s/files/1/0432/5369/4626/files/85214311042.pdf
- https://cdn.shopify.com/s/files/1/0432/3934/2247/files/54403251590.pdf
- https://cdn.shopify.com/s/files/1/0435/0319/0181/files/nebotibosow.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuxekenosagulowagegur.pdf
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/93216005454.pdf
- https://cdn.shopify.com/s/files/1/0446/8034/7801/files/befavonetonafopikore.pdf
- https://cdn.shopify.com/s/files/1/0431/1705/2053/files/45985554540.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_off00004eb5.bin` `5cc11ce9afd5aed15741d3e51359d45c0e95eb562a8aa804bdbc4ac09e9ad0f5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4EB5	5348 bytes
`font_01_sfnt_off000060bd.bin` `a192ab03bf2a20f82eb020f35384828349a9ec3df838d8512a6f51cdea5adad7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60BD	12040 bytes

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