PDF malware analysis — malicious · fac9728702790963

MALICIOUS

PDF

34.0 KB Created: 2020-08-22 19:06:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 038dd3959171b3be7b163493fb37d016 SHA-1: 7f185d264b6ebc78ae63fb73fb841eb370ffcc98 SHA-256: fac972870279096396c415f1559aadcec56ffccb643d2ffcae213caa24971f0c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=manual+forno+eletrico+brastemp+gourmand+boc60ar'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic, indicating an attempt to manipulate search results or distribute content widely. The ML classifier strongly supports the malicious nature of this PDF.

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=manual+forno+eletrico+brastemp+gourmand+boc60ar
- http://tetat.dentistmedellin.clinicamenta.com/uploads/1/3/0/7/130776445/e3662a0.pdf
- http://files.marsjoyofpainting.com/uploads/1/3/1/6/131606127/1986964.pdf
- https://cdn.shopify.com/s/files/1/0437/9030/3381/files/15748188071.pdf
- https://cdn.shopify.com/s/files/1/0433/9010/7815/files/binugulewexo.pdf
- https://cdn.shopify.com/s/files/1/0428/9026/4742/files/40013758491.pdf
- https://cdn.shopify.com/s/files/1/0434/1553/5774/files/emotions_definition_and_types.pdf
- https://cdn.shopify.com/s/files/1/0428/0057/8723/files/69230930906.pdf
- https://cdn.shopify.com/s/files/1/0428/3170/8316/files/51469774718.pdf
- https://cdn.shopify.com/s/files/1/0431/1747/8044/files/2015_suzuki_gsx-_r750.pdf
- https://cdn.shopify.com/s/files/1/0434/1121/0398/files/62639997340.pdf
- https://cdn.shopify.com/s/files/1/0433/9302/4149/files/48150902665.pdf
- https://cdn.shopify.com/s/files/1/0429/2476/9436/files/81277495474.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
- https://cdn.shopify.com/s/files/1/0430/3683/5993/files/pepopugomubavop.pdf
- https://cdn.shopify.com/s/files/1/0434/9270/4408/files/kigevukuwek.pdf
- https://cdn.shopify.com/s/files/1/0435/8832/1437/files/juxal.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_off00004621.bin` `9ca68669c9f922a0ed68213644ba8ec6a1167f271697ba5d91b165a5c51a5749`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4621	5916 bytes
`font_01_sfnt_off00005a28.bin` `7bde6a9d9d9738a078347c99f9823d7cc0833c9f57dabf454d741588a8cee524`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A28	9588 bytes

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