Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69d08f0b24fc1ed…

MALICIOUS

PDF

65.5 KB Created: 2020-08-09 16:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68f9214a8f4cbdb5fb0f23f404ad0945 SHA-1: f4b0f798245225ddcceee4a1b9cf6676e510ce17 SHA-256: b69d08f0b24fc1ed06ac8a6944c8a79a58cb0acb35c47906bb1d21df9a788b24
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or redirection attack designed to lead users to malicious content. The document body text, though partially corrupted, contains keywords related to academic theses, suggesting a lure to disguise the malicious intent.

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.cc/pify?keyword=dedicatorias+y+agradecimientos+para+tesis+pdf
    • http://files.nycsigmakappa.com/uploads/1/3/1/4/131453499/fb96883ee0.pdf
    • http://labosuvag.swracemanagement.com/uploads/1/3/1/4/131438641/fafuxonarutu.pdf
    • http://mefadi.blackdogdigital.com/uploads/1/3/1/6/131637316/5b577ff4c7d9.pdf
    • http://files.ianlong.org/uploads/1/3/1/4/131410479/xijemu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/burozesurolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/luxuwubewizigewetiwizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7762/3201/files/dasinuvebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3408/files/elements_that_hinder_effective_communication.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/wukamakikawog.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3507/files/84180908033.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0481/files/2s_complement_to_decimal.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/29792650285.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/acl_reconstruction_rehab_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/82190886295.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/3835864190.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/business_plan_samples_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0430/0685/3269/files/cambridge_international_dictionary_of_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9670/files/51052717484.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000872a.bin
ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x872A 6744 bytes
font_01_sfnt_off00009812.bin
0fa7e90a5c1e8ac330980d98ff87f1def4a3d13c495338779da14470fa22b294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9812 5544 bytes
font_02_sfnt_off0000aadf.bin
b1ada7e4af363a81a9a0e6448f2f622c913faa0f37b76583b11a1d40254025c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAADF 4900 bytes
font_03_sfnt_off0000bbf9.bin
2f20cc05dc2a440c32b45b9a12bdfdaada0ea29a09b397bc2e89ac92e624c6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF9 11316 bytes
font_04_sfnt_off0000e0d0.bin
313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 16060 bytes

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