PDF malware analysis — malicious · ca558779d5e23302

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 04:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5753caf50c1732276c7b7e1311d5d6bd SHA-1: ee1441cd565e8ae278284e08f01065b80e4017bb SHA-256: ca558779d5e23302bd9f74361bec871f0ed8d68cf7cdbf4bafe266d2cea06638

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is `https://ttraff.ru/pify?keyword=effects+of+smoking+on+health+pdf`. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of numerous PDF links, many hosted on `cdn.shopify.com`, indicates a link farm strategy to improve search engine ranking for malicious content.

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.ru/pify?keyword=effects+of+smoking+on+health+pdf
- http://files.ewiechart.com/uploads/1/3/2/3/132302913/gomokiwu-dapewijutufose-jofumuvusu.pdf
- http://files.vivalavisaa.com/uploads/1/3/1/6/131606231/1008221.pdf
- http://files.rosenortfellowship.ca/uploads/1/3/1/3/131380482/8e2b0.pdf
- http://buxuguto.dtelmore.com/uploads/1/3/0/8/130873995/878cd29e3fef4.pdf
- http://files.tomhall.org.uk/uploads/1/3/0/9/130969695/2270760.pdf
- https://cdn.shopify.com/s/files/1/0427/8861/8396/files/dupinebadixuxu.pdf
- https://cdn.shopify.com/s/files/1/0430/9005/1221/files/gafuxedovatokaxapes.pdf
- https://cdn.shopify.com/s/files/1/0440/4012/6614/files/26156076146.pdf
- https://cdn.shopify.com/s/files/1/0431/9199/2481/files/verb_suffixes_list.pdf
- https://cdn.shopify.com/s/files/1/0431/0240/4769/files/8209708701.pdf
- https://cdn.shopify.com/s/files/1/0429/6340/2905/files/37669248175.pdf
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/gate_electronics_and_communication_engineering_books.pdf
- https://cdn.shopify.com/s/files/1/0428/2109/1484/files/nogufotumowitexoweka.pdf
- https://cdn.shopify.com/s/files/1/0436/9291/6886/files/9998373801.pdf
- https://cdn.shopify.com/s/files/1/0430/8670/8893/files/2675219766.pdf
- https://cdn.shopify.com/s/files/1/0434/3024/8600/files/xaroxep.pdf
- https://cdn.shopify.com/s/files/1/0433/7437/9164/files/fijoxu.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_off00006de1.bin` `f0ea06c7abc8e86db629012bd5ad6e77d549bda33318326fb16ce8a02035fb01`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DE1	5492 bytes
`font_01_sfnt_off00008079.bin` `c4393599de8c6d53639f2ab7ed524c30d6be16897ab78403ae41b117d5db6c11`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8079	10368 bytes

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