Malicious PDF — malware analysis report

Static analysis result for SHA-256 96db5ae00d7084eb…

MALICIOUS

PDF

35.4 KB Created: 2020-08-04 04:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f060f396218d8263b9125a8ab9b9878 SHA-1: cc2ce9816e647674dca34b71249c471a76b0c43d SHA-256: 96db5ae00d7084ebdf031059a65d1776ba204c39f86d221250552b2d4a28c8f0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=pdf+del+libro+cazadores+de+microbios'. The document body, though heavily obfuscated, also contains this URL and references to other Shopify-hosted PDF files, suggesting a coordinated effort to distribute 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.com/pify?keyword=pdf+del+libro+cazadores+de+microbios
    • http://files.bluegrassharmony.com/uploads/1/3/0/7/130776166/beffb386384e5.pdf
    • http://files.xolhemetsociety.org/uploads/1/3/1/3/131379801/b2868b8dd94.pdf
    • http://files.kmbestpractices.com/uploads/1/3/1/4/131437657/9ae2b0.pdf
    • http://files.johnspauldingphotography.com/uploads/1/3/1/6/131636719/fedevudi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6119/files/geborigerifa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/44825406843.pdf
    • https://cdn.shopify.com/s/files/1/0428/0752/5542/files/79335429042.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4663/files/tanovebatabif.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/jufowalerejajapene.pdf
    • https://cdn.shopify.com/s/files/1/0434/2326/9014/files/mizuwamudevalafoka.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/lizuxaxixanojamenokitubuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/sedifawir.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/mojulexajewepozukejijife.pdf
    • https://cdn.shopify.com/s/files/1/0430/4781/3269/files/8661560688.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/felamisakawubibaxejurelok.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_off00004b83.bin
94e5fcfca78ff3ceb42d79081fba972d38622201343a601ee423da1ffc267126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B83 5360 bytes
font_01_sfnt_off00005da9.bin
e13c60a1fcfb0bf4689b25b898c758dfd32f5ad0d0582af55d05d63cf5d3bb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 10304 bytes

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