Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48b55937120e362…

MALICIOUS

PDF

62.4 KB Created: 2020-07-15 00:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92a5bcc4d667ff4b6167828dfa0391f0 SHA-1: 6088611ef9b5b2ec19eb350bf09913a40f6ac361 SHA-256: b48b55937120e362c21c7182f3bfa805fe1add9ba0cc0a8afaedcc2faa9bc694
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a router manual. It also features a large number of links to other PDFs, suggesting a link farm for SEO poisoning or traffic redirection. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to copy/paste content into a shell, likely to execute commands or further facilitate the malicious redirection.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wb?keyword=huawei%20hg8245q%20router%20ont%20combo%20manual
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://files.shop1248.com/uploads/1/3/1/4/131413148/5397694.pdf
    • http://files.triponaship.com/uploads/1/3/1/6/131637014/20ac77bb0e9e40.pdf
    • http://files.christinevanwalraven.com/uploads/1/3/2/6/132681362/4033121.pdf
    • http://files.soundboundhealing.com/uploads/1/3/1/3/131381900/4639881.pdf
    • https://kejaram.files.wordpress.com/2020/06/385941565.pdf
    • https://dedukugila.files.wordpress.com/2020/07/boduvejojejeje.pdf
    • https://baxemetulej.files.wordpress.com/2020/07/19790570812.pdf
    • https://jitijakofo.files.wordpress.com/2020/07/jolinufijetixiv.pdf
    • https://matifanado56782351.files.wordpress.com/2020/07/92908817019.pdf
    • https://sapofavef.files.wordpress.com/2020/06/26529405393.pdf
    • https://dadikopur.files.wordpress.com/2020/06/monop.pdf
    • https://zovimefifu.files.wordpress.com/2020/07/kuwenexepoxunik.pdf
    • https://sexorewidejo682915272.files.wordpress.com/2020/06/kokevujipajijom.pdf
    • https://runokuxuzeni.files.wordpress.com/2020/06/82989493943.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/xidogibuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/87604233389.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zimupumunilojoduwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/wisofeva.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/nufagapivo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/zaxanedukomote.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/25084046217.pdf
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/42603652754.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nelafujadodejofit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.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_off0000a7a0.bin
a1604cd429b7d59411a527e72f301dc0cc62b29716b7a07b5ce1f2fdc77f0691		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A0 5772 bytes
font_01_sfnt_off0000bb28.bin
a930c1a26dc0b175a009a105da48209676acd50008f43d55fe5fe6509b45f28f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB28 16248 bytes

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