Malicious PDF — malware analysis report

Static analysis result for SHA-256 51bccc23756ff771…

MALICIOUS

PDF

44.4 KB Created: 2020-08-10 04:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68bbdde6e938773d60b6d76982292912 SHA-1: 4e3c59a0d8045ad943a16cb8dcecfbed46411335 SHA-256: 51bccc23756ff7714f74b711b52105ebd09eff4704e3baae1854686ebeec5217
120 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to the presence of numerous embedded links. The primary malicious URL, 'https://ttraff.com/pify?keyword=que+es+el+contexto+linguistico+pdf', acts as a redirector, likely leading users to further malicious content or phishing pages. The document also contains a large number of other PDF links, many hosted on Shopify, which is characteristic of SEO link farm techniques used to manipulate search rankings or distribute malicious files.

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=que+es+el+contexto+linguistico+pdf
    • http://files.sunrivertransparency.org/uploads/1/3/1/3/131398091/2413687.pdf
    • http://files.stalbanstpetebeach.org/uploads/1/3/1/4/131406507/xoxugujodananux.pdf
    • http://files.maggiekleemdds.com/uploads/1/3/0/8/130813301/sanukizuniwa_tejogefilakoxu.pdf
    • http://files.backwoodsbangshop.com/uploads/1/3/0/8/130814200/kukepez_vokalumiwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2268/files/43400487275.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/21500635438.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/pedenipumawerugusefivasim.pdf
    • https://cdn.shopify.com/s/files/1/0434/1576/5148/files/poxedidowutozed.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/45350837967.pdf
    • https://cdn.shopify.com/s/files/1/0428/4357/0343/files/felidixumogejoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/cctv_camera_setup.pdf
    • https://cdn.shopify.com/s/files/1/0428/5559/6198/files/50023319399.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/21675704072.pdf
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/zajoribogotamewewetap.pdf
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/biological_anthropology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/3729/3718/files/70486958140.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/levafifusexipamofozupogu.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_off0000641b.bin
7211ebe9451bc8dfca7ddb497020682d2e669c4a0f5e530d28cea15d0d0dee99
pdf-font-stream PDF embedded font (sfnt) at offset 0x641B 5148 bytes
font_01_sfnt_off000075c2.bin
95dabee98e5de5511861d836d232247e734ba9961d06c3b34e550b812bbd734f
pdf-font-stream PDF embedded font (sfnt) at offset 0x75C2 15124 bytes