Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf4cf176fe8cebf…

MALICIOUS

PDF

44.9 KB Created: 2020-08-12 23:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52dfdfd5daacbe595bec972fb3fb3c62 SHA-1: cfdce7e9d91c08fed8d13dc0a4da2dba23f3fa35 SHA-256: bbf4cf176fe8cebfe0a96e44c66b86251300ea52d6e65bb19a8a7bcc98e46888
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests the document is designed to funnel users through a series of redirects, likely to a malicious site or for SEO-based traffic manipulation. The document body itself is heavily obfuscated and contains the primary malicious URL.

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=anglican+ordinariate+missal+pdf
    • http://files.sessumselementarypta.org/uploads/1/3/0/9/130969527/0e6c3b9070e9e29.pdf
    • http://files.erinmerrill.studio/uploads/1/3/1/3/131383514/89887.pdf
    • http://files.streathamsociety.org.uk/uploads/1/3/1/0/131071258/6341c1b76951.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9762/files/notekobakidogomepi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/12102689489.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/26919743668.pdf
    • https://cdn.shopify.com/s/files/1/0433/8666/7158/files/xutejomezaxekag.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/83406196375.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/62149516987.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7587/files/zifik.pdf
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/autocad_2015_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/xapepizivigulepoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2535/files/black_swan_taleb.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/rozazirapusisagigevomev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/meradujedovegevawupajefif.pdf
    • https://cdn.shopify.com/s/files/1/0437/9194/1781/files/poultry_farming_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0436/4346/9974/files/44762879901.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_off000071b4.bin
7dc8d05683342a08a8b090f70e4d84709c0e5c9e494e72196580e45c19ea2c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B4 5464 bytes
font_01_sfnt_off00008429.bin
0f6b1c8c0c724c97190334340089db477a8a3fba0c05d1396bbae239b89bd8ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8429 10112 bytes

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