Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc200396d1f4b1e6…

MALICIOUS

PDF

34.7 KB Created: 2020-08-21 00:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c3e7a688e0b95478e6238985ef7b010 SHA-1: 70c497c61025d98bb7414c2e3982939be916d7ea SHA-256: dc200396d1f4b1e6f48946b15522bf8e74f3b780c312acd4dce85dd1074b5820
120 Risk Score

Malware Insights

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

The PDF contains a link farm heuristic, indicating a large number of embedded links. One of these links, 'https://ttraff.com/pify?keyword=hurtta+adventure+sele+storleksguide', is identified as a malicious redirector. The document body, though partially corrupted, contains this same URL, suggesting it's the primary lure. The presence of numerous Shopify-hosted PDF links likely serves to obscure the malicious intent by appearing as a legitimate collection of documents.

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=hurtta+adventure+sele+storleksguide
    • http://files.tungbrushph.com/uploads/1/3/1/3/131379678/karisujizoxotir-napovujade-getolipujoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/loxelema.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/30966623217.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/95888846959.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/61571990585.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/zidesemupelovofet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/2980199344.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/2965817326.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/35307434970.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/pdf_decrease_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/43438572100.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/illinois_boat_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/wokitojovedumozafefetek.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_off00004b56.bin
347ce369bf0753138e20ad63ef201a8c3016690d8cee079d544bf1fef72f2a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B56 5080 bytes
font_01_sfnt_off00005cb3.bin
95d04dbd4a525ed3f67c2155bd254b63cf201fe23cc4e7b6da09f6311d1c0a2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 9768 bytes

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