Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa921b3cbcba252…

MALICIOUS

PDF

61.0 KB Created: 2020-08-23 19:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 802e842675868add0472404832a7a06c SHA-1: 3f855995ed8401d3a975cbc8e74583ff016d5e25 SHA-256: 9fa921b3cbcba2523e6faac180766c34435a1cf424b1ea930b17f7e476554019
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a product search, suggesting a lure to trick users into clicking the malicious link. The primary malicious IOC is the redirector URL.

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=beboncool+tablet+bluetooth+game+controller+for+android
    • http://files.vsportsapparel.com/uploads/1/3/1/4/131406372/vetorefopat-muwigubu-fuzozabanarot.pdf
    • http://files.vivabivona.com/uploads/1/3/2/6/132696483/figimapogoteju.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/89912555515.pdf
    • https://cdn.shopify.com/s/files/1/0436/3082/1529/files/5465777403.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/lands_end_uniform_sale_code.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/24453665549.pdf
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/9107177581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faxusumowavunisipor.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/22894581433.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/5_generation_family_tree_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/juvelikelenuzapul.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/concone_lyrical_studies.pdf
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/vemaveridureneb.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/96484078925.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/pubomuwobejunaz.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_off0000b037.bin
6f1981c55243dd5b758311b145ee65918a46de25730ace73fa4268f75c70eacd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB037 5448 bytes
font_01_sfnt_off0000c28b.bin
03b77405aacbe24a542a0ac732002ee270cd6711a567bc93dde641a8a66f54dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC28B 10636 bytes

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