Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8938ccd48c5efbf…

MALICIOUS

PDF

60.3 KB Created: 2020-08-03 20:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f93e6883f4c4619f0fc6c6af27ed501 SHA-1: 892f299c3d81a2001d381d92c05528692f8018dc SHA-256: e8938ccd48c5efbfaf0fbf0b5a2c84d9374ffa910fc30cfe3fe2685798e8366a
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=bible+in+english+pdf+download'. This URL is presented within the document body, suggesting a social engineering tactic to trick users into clicking the link under the guise of a legitimate search result. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting the malicious intent.

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=bible+in+english+pdf+download
    • http://files.ochrelawsonart.com/uploads/1/3/1/3/131381712/2b2aab1ff56.pdf
    • http://files.taxidermytrainingunlimited.com/uploads/1/3/1/4/131453463/fesog.pdf
    • http://files.cadenceandkale.com/uploads/1/3/1/8/131871414/5139380.pdf
    • http://files.omahaseniorresourcegroup.com/uploads/1/3/2/6/132680994/3619350.pdf
    • http://files.quailridgebrittanys.com/uploads/1/3/1/6/131637876/49eea274.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/minopipetujireju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67295211500.pdf
    • https://cdn.shopify.com/s/files/1/0439/8333/9678/files/basic_accounting_multiple_choice_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/dates_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/livotagetikama.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/xiveweralivafaxukuxafa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/zusuraselenunineretido.pdf
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/31045184830.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0437/8404/4705/files/mivofakaxuxajebajivo.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_off0000ae09.bin
85839b0be1e59ef8039d93d0051c13dcc80b3fc9f5a96bb660c262e6971cec96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE09 5488 bytes
font_01_sfnt_off0000c0c8.bin
f974bfa5fedafcf88af7885117278127ef17c08ebefb6e8e33b49b9efdf919e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C8 10588 bytes

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