Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ad1398804fe89f…

MALICIOUS

PDF

51.3 KB Created: 2020-08-24 13:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47e0a51aa10e3590819eba57c3f2f1d9 SHA-1: 6ecd7d50e9292a62405b2a833654a2d980d3cf2b SHA-256: 34ad1398804fe89f43c4900ecf0aa5ebcf5d76c0de4ba660146a54bb68ee1e1b
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bds+full+form'. The document body, though heavily obfuscated, appears to contain this same URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links, suggesting a broad phishing or SEO poisoning campaign.

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=bds+full+form
    • http://nixeso.thefishonlodge.com/uploads/1/3/1/3/131380600/zudovasem.pdf
    • http://files.moonfulmama.com/uploads/1/3/0/7/130739674/7138471.pdf
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/kudesewomaruru.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/dodiguxoxole.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/wenapowoluduxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5509/5716/files/transformao_isotrmica_isobrica_e_isovolumtrica.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/statistical_process_control_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/0455/9519/files/69009000338.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/cracy_frog_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/dibipaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/wasadidofotute.pdf
    • https://cdn.shopify.com/s/files/1/0435/8301/3023/files/aeroplane_whatsapp_status_video.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/zaminaketojevivowebaj.pdf
    • https://cdn.shopify.com/s/files/1/0463/1271/8498/files/22066844220.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_off00008b5f.bin
714861c55ab8a00423b7dadef30bcf7add269a1346a85525ced7c9d03ac6b528		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5F 4892 bytes
font_01_sfnt_off00009bea.bin
23b5632f0dda5c66df3e2076fa0457dd822f2a04b74532e9073752ee87789553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEA 11208 bytes

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