Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6b6fd3928884cb…

MALICIOUS

PDF

41.2 KB Created: 2020-08-01 19:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a0367c5c95dd33517a9a50e68e1fb31 SHA-1: 1a2bf2a70d1a2b8a1d5f7e264b979ef44bd3f6ac SHA-256: de6b6fd3928884cb5c336e0274418725ec241442de55ca9414932ab21f1a702e
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, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=mama+i%2527+m+coming+home+tab'. The document body contains garbled text but includes the same redirector URL and a Shopify URL, reinforcing the link farm and redirection attempt. No scripts were extracted from this sample.

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=mama+i%2527+m+coming+home+tab
    • http://files.kidsrulechildcare.com/uploads/1/3/1/0/131070561/45835c.pdf
    • http://files.gilroyffa.com/uploads/1/3/0/7/130775992/3208973.pdf
    • http://files.otiumlounge.com/uploads/1/3/0/9/130969297/973db6734.pdf
    • http://files.kenyawebnews.co.uk/uploads/1/3/2/6/132681452/6d2388ea0d818.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/funukefediwavugelel.pdf
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/dolasojibuzegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/42150686043.pdf
    • https://cdn.shopify.com/s/files/1/0431/9330/3204/files/zelupagukuza.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/zimakibaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/72335867791.pdf
    • https://cdn.shopify.com/s/files/1/0436/5202/2430/files/laxefugenojepitugapawu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/potizofaruvinip.pdf
    • https://cdn.shopify.com/s/files/1/0428/4570/0262/files/84632617501.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/legujif.pdf
    • https://cdn.shopify.com/s/files/1/0429/0510/8636/files/18964677658.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4935/files/robifiduraze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/volobufepafolosovi.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_off00005b97.bin
338c22f03afa659ba9526455d6a8ace191e83f8ab79f562583bfb70972f8214f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B97 5084 bytes
font_01_sfnt_off00006cd6.bin
719cdbb6cdb11123aff10986113648f189b236e56cb3d005e2ac8cff8982a0ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6 14004 bytes

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