PDF malware analysis — malicious · 51ee5375725b50f8

MALICIOUS

PDF

136.6 KB Created: 2020-09-18 16:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5743faef363be9271fe48221ffd0e532 SHA-1: 25c711b53556270636fde12386058052482dfab1 SHA-256: 51ee5375725b50f823f3e9ff559c722caee722e924f693da76332071a2341abd

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=tan+x+in+terms+of+sin+and+cos', is designed to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external documents, suggesting a broader campaign to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector.

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.link/wix?keyword=tan+x+in+terms+of+sin+and+cos
- http://files.trinitybaptist-illinois.com/uploads/1/3/2/6/132695258/sumadizobawaxisajo.pdf
- http://vepix.naye.org/uploads/1/3/0/8/130874114/wilabenobowol_pidonowisideji.pdf
- https://4ca85dc9-a125-44c8-8755-3077134d9d0a.filesusr.com/ugd/135178_fe128411c9c04e2bab757b25ae37fe41.pdf?index=true
- https://04bc7525-65f6-4d18-9c7d-984aef19edbf.filesusr.com/ugd/cdfdba_d48fd114e1684d0b9a2b5990dc5b45ea.pdf?index=true
- https://688b9e1d-bb54-46a0-992f-d046501a23f6.filesusr.com/ugd/b444d4_a30161034fc94083bc54473a78d2e651.pdf?index=true
- https://f42f4da8-3f68-4fa8-a376-9774a0920bf6.filesusr.com/ugd/accd1f_2d8c431b41b94f6090e2df43a1294f32.pdf?index=true
- https://cdn.shopify.com/s/files/1/0430/8136/7712/files/argmin_in_latex.pdf
- https://cdn.shopify.com/s/files/1/0434/9339/2536/files/xuvuzamarekizekefezeton.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35117459625.pdf
- https://cdn.shopify.com/s/files/1/0436/3508/1374/files/foxfi_key_supports_pdanet_apk_full.pdf
- https://cdn.shopify.com/s/files/1/0428/9203/4211/files/76706408142.pdf
- https://cdn.shopify.com/s/files/1/0449/3521/7307/files/gimupigadamejufux.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_off0001b123.bin` `582f44bb63eaf3048da6278442d32e1d3974e7519c6bff2078202066b6c6bcc3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B123	5152 bytes
`font_01_sfnt_off0001c29b.bin` `4e3de4fc24ce0e3fe8be3a8bd362fc7b77da920cc1755d1c0d4949fd67c966fa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C29B	18256 bytes
`font_02_sfnt_off0001fbf2.bin` `1571366eaef651625db1f3879f8b491cef9450de92e6b27e4da9951ebd50f43e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1FBF2	17132 bytes

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