Malicious PDF — malware analysis report

Static analysis result for SHA-256 596f75c759913a08…

MALICIOUS

PDF

37.6 KB Created: 2020-08-18 13:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bc28a998d4235b45ba097fb2eb48b3f SHA-1: fc5a87454afafd5bc2c02afad2fb5760dead5c97 SHA-256: 596f75c759913a08036eb6733fbb5d9e129dde6c3363c28eaa9c44eb5042ee2c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=behind+enemy+lines+colombia'. The document body, though heavily obfuscated, contains this URL and other links to Shopify domains, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to the malicious redirector.

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=behind+enemy+lines+colombia
    • http://files.natwellsupplements.co/uploads/1/3/1/4/131482958/zezaxab.pdf
    • http://files.jeroenkoevoets.com/uploads/1/3/2/3/132303312/pitodu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/83303797017.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/danly_guide_bushings.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/83454155222.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/13288046558.pdf
    • https://cdn.shopify.com/s/files/1/0432/4959/8632/files/75811645564.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/bakteri_bacillus_anthracis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/84651781988.pdf
    • https://cdn.shopify.com/s/files/1/0449/0140/0731/files/archipelagic_doctrine_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/nopaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/brunner_and_suddarth_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/32470134623.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_off0000537c.bin
c515dfa54bd32d09652ee1e01faca94bf025e9d87b9660ab8c02de264cc07f87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537C 5372 bytes
font_01_sfnt_off00006594.bin
d42150c9d1af9e84963edc014e501b4ba2c624a2c4c72b8170e0226f60624020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 10820 bytes

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