Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6e928ae1b3fe96…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 18:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4855ff43a4aa06463cd787413b95ac7e SHA-1: b4f17d6702f61943350158515e0faaeb8cbd2804 SHA-256: aa6e928ae1b3fe962cdaf9ea76eacd7314fea040d7def4c9ef2a03fa72bce029
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=doterra+on+guard+beadlet+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to PDF files and keywords that likely serve as lures to encourage clicks on the embedded malicious links.

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=doterra+on+guard+beadlet+pdf
    • http://nulume.mcso-tn.org/uploads/1/3/2/7/132712116/zefukizonufim-zadexikuniga.pdf
    • http://files.motheongprimaryschool.com/uploads/1/3/2/6/132681066/624fe08.pdf
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/juxofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/split_merged_files.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/75951943502.pdf
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/elasticsearch_delete_index.pdf
    • https://cdn.shopify.com/s/files/1/0433/6962/7799/files/game_of_thrones_season_1_complete_720p.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/ruzebogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/bubujofimovikibo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3709/0211/files/27151891478.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/19674696269.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.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.

FilenameKindSourceSize
font_00_sfnt_off00005fdc.bin
daa93e72fcfa6cefe5a1c7ef659d43caab1105212f9047db51115a08e426b148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDC 5172 bytes
font_01_sfnt_off00007181.bin
790b1d4041938d39d5274800dbcae1936d8ef8c0db3f9e55cf635a3cb2eae0b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7181 15020 bytes

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