Malicious PDF — malware analysis report

Static analysis result for SHA-256 fddb7bd9e7c44de9…

MALICIOUS

PDF

46.3 KB Created: 2020-08-19 12:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb60049dbeba2d81e18fde30e5e2971 SHA-1: 4e7c0538df101db83956873370fc0cbde7560d23 SHA-256: fddb7bd9e7c44de90ffe52cd5cbf3c6f1e2adcab7b11b2da738c55bbd3ff212a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to appear as a health guide, but the primary URL redirects to a known malicious redirector. This suggests a social engineering tactic to lure users to a malicious site, likely for further exploitation or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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=16%252F+8+intermittent+fasting+guide+nhs
    • http://files.lorifurbush.com/uploads/1/3/0/8/130814254/lopiwuvivodixu-xidito-teteweg-vataduvol.pdf
    • https://cdn.shopify.com/s/files/1/0431/9330/3204/files/50666419281.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8511/files/36852528784.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/porujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/wilamu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/17902873566.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/clinical_pharmacy_by_bajaj_and_tipnis_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/fotidodum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/air_force_x_group_model_paper_in_english_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/how_to_test_for_chloroform_in_water.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/retixojipopomeloxajunemig.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/88306492116.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9121/files/wixenobumasuriwukupilep.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_off000075d5.bin
f81f95bc652d9b0ba695fc87485f8c942ce8d74566606543ced9646b3f99c066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D5 5628 bytes
font_01_sfnt_off000088d0.bin
4d0ae0d04df3ae0e39e40384ee99655fd69f52ade3b7b8dfd70934188d34261d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D0 10352 bytes

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