Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7c24f13fc0395f…

MALICIOUS

PDF

58.6 KB Created: 2020-08-05 23:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92a5201950ee16a41b164001639f68b9 SHA-1: 150f26e98eb4fe5d4a206cb277e86ef399d1c2dd SHA-256: 3c7c24f13fc0395f7eeb8f0901ecbbda52be8774c6e300c2a8762a059f101861
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=geometrical+optics+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, also contains the primary malicious URL. These factors strongly suggest the PDF's purpose is to lure users to a malicious site.

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=geometrical+optics+pdf
    • http://files.bluepeaphoto.com/uploads/1/3/1/4/131437074/1657194.pdf
    • http://files.lovebabiestennis.com/uploads/1/3/2/8/132814427/b037d404.pdf
    • http://nunelusep.releasology.com/uploads/1/3/0/7/130739678/836088.pdf
    • http://files.carolteitelbaum.com/uploads/1/3/2/6/132681245/0d6877a17e2b.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/wayne_dyer_power_of_intention.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/16507618755.pdf
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/list_function_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/87822482359.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/sony_icf-_c218.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/vemudakivetijisimuxivex.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/37659177095.pdf
    • https://cdn.shopify.com/s/files/1/0431/6443/4583/files/81625042368.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/81714769652.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/aaa_towing_manual_for_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000827a.bin
e1016d00681688aa018187bfeedfbfc5abe3e19b7ec92cecaf6a9dc51c8c041d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x827A 5332 bytes
font_01_sfnt_off00009485.bin
e1087ad08325a49ac0d81bd81107cbb350ce1e7e0ecc587d87d6c83eeac0be92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9485 16156 bytes
font_02_sfnt_off0000c793.bin
27d5b1f1aeecdb1e4c7d2f558b6cfac82b2b824e0eb830d480cb5c77e6ec98d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC793 16304 bytes

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