Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee88ea546b9476a4…

MALICIOUS

PDF

46.7 KB Created: 2020-09-05 00:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f4315ce411842aabd603f50e20ef892 SHA-1: 69984c7df91c90f177a0408b821935a9a5f4d649 SHA-256: ee88ea546b9476a4c7a74934232750c47eb3f2db03cc8909a6cb5d4c313b4e59
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=bihar+board+intermediate+admit+card'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, with the first being 'https://cdn.shopify.com/s/files/1/0466/2404/7269/files/malcolm_baldrige_performance_excellence_framework.pdf'. The document body, though partially corrupted, contains text related to 'Bihar board intermediate admit card' and the redirector 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/wix?keyword=bihar+board+intermediate+admit+card
    • https://cdn.shopify.com/s/files/1/0466/2404/7269/files/malcolm_baldrige_performance_excellence_framework.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/bixelumusefuzit.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/hawaii_stopover_los_angeles.pdf
    • https://static.usrfiles.com/ugd/d216cb_80b924c085a8453784c0735f168e9364.pdf
    • https://static.usrfiles.com/ugd/4c1554_f7d58d3451c44272a6c444b779404871.pdf
    • https://static.usrfiles.com/ugd/c0a468_6add6bef26724705ad4d22da48f7bb07.pdf
    • https://static.usrfiles.com/ugd/b8c837_dab5dad5c154444baac3490c4848d38d.pdf
    • https://static.usrfiles.com/ugd/83b1b3_feb93874aacf474f97a803abae623b4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fcf0ee413bb4b1a950c85924eaf43a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_c207b765a0f34def87e54e84cc07233c.pdf
    • https://static.usrfiles.com/ugd/c8d394_0a1e227d610c420091fa82aa4d287558.pdf
    • https://static.usrfiles.com/ugd/7ff653_6ef01c72252c446ba8f7474df9588ad3.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_off000073d1.bin
53a3cd86864529c3f5721bf680a04183f9f39ee2463cf440db27fa4111b4a249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D1 5156 bytes
font_01_sfnt_off0000852c.bin
9ace2c145ba6224d14b75b394e18b90b9824937d6c8bd0555ab195a500947a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x852C 12516 bytes

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