Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ed6d1bbea9b977…

MALICIOUS

PDF

41.2 KB Created: 2020-08-10 03:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733075b4ef903ed49ad967f23d298968 SHA-1: dbc8605e77fed7b8b49f51eb3b76846fe177c1e8 SHA-256: e9ed6d1bbea9b9775bbc60f9394220f4d5925af0d91bee2565ff6e8a29dc3003
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, characteristic of a link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=wonderwall+guitar+pdf'. The document body, though partially corrupted, contains text suggesting a lure related to 'wonderwall guitar pdf'. The presence of numerous PDF links and the malicious redirector strongly indicate a phishing or redirection attack.

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.com/pify?keyword=wonderwall+guitar+pdf
    • http://files.ashagarrattmakeupartistry.com/uploads/1/3/0/7/130740563/ranoguvupak-zejiluwefuwe-nokowum.pdf
    • http://files.rhondastruminger.net/uploads/1/3/1/0/131071076/1562942.pdf
    • http://files.russellwedwards.com/uploads/1/3/0/7/130775825/jetizowomodowase.pdf
    • http://files.jesus5.com/uploads/1/3/1/1/131163705/ruzusevafefuza_zasamaxavufa.pdf
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/fuvinarumobow.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/82859125889.pdf
    • https://cdn.shopify.com/s/files/1/0434/9601/3990/files/80447765434.pdf
    • https://cdn.shopify.com/s/files/1/0437/4344/5141/files/novutibilijojewek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8593/0402/files/remexevutikanomam.pdf
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/dulenaki.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/64362018517.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6461/files/asvab_paragraph_comprehension_test.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/wayside_school_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdf
    • https://cdn.shopify.com/s/files/1/0429/7831/2355/files/62414820972.pdf
    • https://cdn.shopify.com/s/files/1/0428/8797/0975/files/embed_in_google_sheets.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_off00005b9d.bin
bfb9db2eb715c65fe95fb4a2be3f5345466a039d7701942a626b8dfb6bc769d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9D 5136 bytes
font_01_sfnt_off00006d44.bin
5f6d0e799f946e6185a48a9158b78edc0b416bec887d9cb01c789baffff5a87a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D44 13764 bytes

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