PDF malware analysis — malicious · 9c7fbeea1b72ff91

MALICIOUS

PDF

42.3 KB Created: 2020-07-31 01:29:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1710977759f602574779733237a62df0 SHA-1: 6917314f414e69361e81220e976d000d6ea8ca3d SHA-256: 9c7fbeea1b72ff911735ea4118a260acb9eb886575455edc99523b4a3cc85ba7

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Anexo 20 cfdi 3. 3 pdf' and 'invoice/payment', aligning with the 'SE_INVOICE_LURE' heuristic. The primary malicious URL identified is ttraff.ru, which is used to redirect the user to further malicious content.

Heuristics 4

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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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/pify?keyword=anexo+20+cfdi+3.+3+pdf
- http://files.ribbonsbyfir.com/uploads/1/3/1/8/131857734/fepefepibosunerodu.pdf
- http://files.thetunacakes.com/uploads/1/3/1/4/131437632/d4eb01d897.pdf
- http://files.theasvabtutor.co/uploads/1/3/1/4/131408364/bf495c11f65.pdf
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/79310425569.pdf
- https://cdn.shopify.com/s/files/1/0437/2430/8630/files/39752455999.pdf
- https://cdn.shopify.com/s/files/1/0431/7587/0613/files/nexajimarusulumume.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
- https://cdn.shopify.com/s/files/1/0435/8402/8833/files/10897150973.pdf
- https://cdn.shopify.com/s/files/1/0430/4433/9861/files/mebifevotevekelijubunoke.pdf
- https://cdn.shopify.com/s/files/1/0435/1570/7551/files/15623628563.pdf
- https://cdn.shopify.com/s/files/1/0428/2816/9375/files/vilimejesanusurusoxa.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/zujenibiju.pdf
- https://cdn.shopify.com/s/files/1/0432/7342/0965/files/76757944834.pdf
- https://cdn.shopify.com/s/files/1/0432/7777/9100/files/63098992272.pdf
- https://cdn.shopify.com/s/files/1/0430/1645/4305/files/58755227420.pdf
- https://cdn.shopify.com/s/files/1/0432/0978/5512/files/11202907351.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/
- https://cdn.shopify.com/s/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006951.bin` `775321f68043aceea1918cca607713cb3c703d1b740e2e63a38bfd267c2df6e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6951	4868 bytes
`font_01_sfnt_off000079f9.bin` `d39edefc61776f454fcc38ceb57c28aecc08069616e523bf23a37b33df5293d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79F9	10048 bytes

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