Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1123de4d7df20a…

MALICIOUS

PDF

36.1 KB Created: 2020-08-01 18:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f4800cf6b861ef016658692be93797d SHA-1: 6228da0c915235b7957777690304606aa7cd7152 SHA-256: ed1123de4d7df20a14d835d2ad0225ce7361a69fa9bbd45b2a225bb9b171ebee
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'weather fayetteville ar'. The heuristic firings indicate the PDF is a malicious redirector and part of a link farm, suggesting an attempt to drive traffic to malicious sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=weather+fayetteville+ar
    • http://files.imaginationscape.com/uploads/1/3/1/4/131437174/sojok-bemeferomogobon-bulazuvofirejig.pdf
    • http://files.stokessolar.com/uploads/1/3/0/8/130874458/fuwapuv_fofub_zitob_legojunokozev.pdf
    • http://files.tbcvaldese.org/uploads/1/3/0/8/130813616/5297703.pdf
    • http://files.rickeysnigeriangoats.com/uploads/1/3/0/9/130969809/garuxin-pugifivagoxo-bexivudiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/ford_ranger_manual_transmission_fluid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/49112924836.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/jujuvakosupudope.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6194/files/giwadudana.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/23961346043.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/jojalonukexozosoxof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/jeparet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32686583269.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_off00005172.bin
cede5a08b401a7dfd078ee885114469410ecdea0b58336d75155aacfc1f5b531		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5172 4852 bytes
font_01_sfnt_off00006207.bin
193ef6fb39c34329e8d1401f2f5052d4ac0d1450b4ed9c637f0745f83f96cb4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 9928 bytes

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