Malicious PDF — malware analysis report

Static analysis result for SHA-256 c028b6327b0cd893…

MALICIOUS

PDF

43.2 KB Created: 2020-08-05 04:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b5d94bd9df5b15c6ebebdd3853b743 SHA-1: 041b6fb202aabc65b99e36dfb28fb11d1ca02c51 SHA-256: c028b6327b0cd893edb09f62144ca69abaef7b901a0a9027495f10c422401ae3
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=load+bearing+wall+design+pdf', which is likely intended to trick the user into downloading a malicious file. The presence of many external links suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content.

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.cc/pify?keyword=load+bearing+wall+design+pdf
    • http://files.bgiplus.com/uploads/1/3/1/3/131379615/c9036433.pdf
    • http://files.kymoversandmakers.com/uploads/1/3/0/8/130814874/garijobopaze-juxevawokuze-mizalabatogixuk-jenitoz.pdf
    • http://jejusawe.sarahdronfieldproofreader.com/uploads/1/3/1/4/131408738/mumewusevijupu.pdf
    • http://files.bearcreekcommunity.com/uploads/1/3/1/3/131378953/af64f5a9a632.pdf
    • http://files.hawaiianryanmassage.com/uploads/1/3/1/1/131164185/julixala-nosogut.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/botames.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40573574370.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/zapefotepebogasovol.pdf
    • https://cdn.shopify.com/s/files/1/0438/1750/0834/files/tasudevemivom.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/3617740560.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/61738262447.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3929/files/47711312515.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/54931612456.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/1000758309.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/xemexer.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/dexevilikodijadozupukaz.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_off00006ab3.bin
895459af4dc2ac70d4d0f450dcbfbca891ba132e55ee4b0fc60c72f292640298		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 5384 bytes
font_01_sfnt_off00007d20.bin
55b48a53d0cc1e16d77d53bf1894e5630c8f8bf8f040f712fd141cc98ceec9dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D20 10168 bytes

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