Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b13697c57a1480c…

MALICIOUS

PDF

33.9 KB Created: 2020-08-06 05:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43b2ae1cbeb9002537bbb3eb704d670b SHA-1: 7a626c74b035af8e402f86cc9c370acf79795092 SHA-256: 7b13697c57a1480cb88cb0a982474f8aba94884db5025950eef000f59673cbf0
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a legitimate document, but it redirects to a malicious URL. The primary heuristic indicates the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL, suggesting a lure 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=handbook+of+livestock+management+pdf
    • http://files.eijustus.com/uploads/1/3/1/0/131070452/178d5d.pdf
    • http://files.beautiful-astrology.com/uploads/1/3/1/3/131397964/ea95b6f3ae15ca0.pdf
    • http://files.jecdevelopment.com/uploads/1/3/1/6/131607467/4027966.pdf
    • http://files.vetsourcecanada.com/uploads/1/3/1/6/131637853/regokomex-bojotapuvilovi-sifozalava-nukufekemixom.pdf
    • http://files.stoneydegeyter.com/uploads/1/3/1/3/131379832/mutuxurenakusur.pdf
    • https://cdn.shopify.com/s/files/1/0435/8127/6319/files/24331221178.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/tumblr_sims_3_cc.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/81239013761.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6618/files/durojepufupufuwofu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/tintin_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/32399122438.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/wuzelif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/nesco_dehydrator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8646/2628/files/emulsion_polymerization_process.pdf
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/juramer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/ranujodufejaxoxap.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/roruzamofinubajomololira.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_off000046eb.bin
e5376704f6a4962c22924a90794d7e65cc2358b40136d4fdabc9a2b461b41a5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46EB 5604 bytes
font_01_sfnt_off000059f2.bin
847b0be60960ebae28466086cad5dfb853dda838998aefd62e90079d0e405cb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F2 9536 bytes

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