Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd21d196267c80d3…

MALICIOUS

PDF

46.4 KB Created: 2020-08-06 03:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b72ad452ada3608b8fa5d800c62d356d SHA-1: 6eb45f6af10900cceca01bbe643d05c361c5b1ed SHA-256: cd21d196267c80d384ab281f440e7273957ffe44c3ef9f9c352a14618d5662bb
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is an 'apttus cpq admin guide pdf' and includes the malicious URL, indicating a lure to a phishing or malware distribution site. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning or to obscure the final malicious destination.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=apttus+cpq+admin+guide+pdf
    • http://levaxu.kellycwong.com/uploads/1/3/0/8/130814788/6846520d49879f9.pdf
    • http://komomitu.parentingincontext.org/uploads/1/3/1/8/131856185/rilewisexudag-remeg-bemexudulekebog-viwojud.pdf
    • http://files.angharadmorgansoprano.co.uk/uploads/1/3/0/7/130739553/5428569.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/24697032892.pdf
    • https://cdn.shopify.com/s/files/1/0434/0881/8333/files/81664918102.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/partnership_deed_in_marathi_format.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/zuvogesudena.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/nadaleki.pdf
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/speaking_in_cod_tongues.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9405/files/jesokaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/90017482143.pdf
    • https://cdn.shopify.com/s/files/1/0447/6495/4775/files/create_root_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/alcatel_pixi_4_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/texaganuxufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/75470775521.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/vuxiremigovudotolesarele.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_off000074b8.bin
db675b7d94ceb169995e01e2f849686c5a4396c04cab39ea3c73e58a972e9983
pdf-font-stream PDF embedded font (sfnt) at offset 0x74B8 5460 bytes
font_01_sfnt_off0000873d.bin
9b7f7b28f655c4b9d113afa6e195099c3963803a2565fedbd29e8308a8148f28
pdf-font-stream PDF embedded font (sfnt) at offset 0x873D 11080 bytes