Malicious PDF — malware analysis report

Static analysis result for SHA-256 d268fb7d508a306f…

MALICIOUS

PDF

34.8 KB Created: 2020-08-17 06:37:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fb3fcda6d41801a4122b868d0223918 SHA-1: cbc33f56805d059bfce690e584dd2e0a3597760e SHA-256: d268fb7d508a306f3b0b37e4787ba01b763f8b55353ab65ba7f44d5e120a978b
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that lead to a redirector service, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains text related to a 'wedding reception drink menu template' and the malicious URL itself, suggesting a lure to trick users into clicking the link. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=wedding+reception+drink+menu+template
    • http://vuvinubos.womensmetgolf.org/uploads/1/3/1/6/131636664/kuxusuxezibibuwewepa.pdf
    • http://files.toplanguagehouston.com/uploads/1/3/1/4/131483138/fajemigiditasiv_ruwom_jogolofedofuxej.pdf
    • http://firimuro.imagesofbritain.net/uploads/1/3/0/8/130814526/766f24.pdf
    • http://files.yosemitewawonacharter.org/uploads/1/3/0/7/130775657/24e4c0e7c20.pdf
    • http://nevomeven.patersonprek.org/uploads/1/3/1/4/131438216/e2cfd.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/36635979666.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/ruxedoker.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/7190584463.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/bebesekasemomuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/vologesada.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6182/files/70991554575.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/concepto_de_anualidades_en_matematica_financiera.pdf
    • https://cdn.shopify.com/s/files/1/0430/7822/1973/files/saditudi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/18024203849.pdf
    • https://cdn.shopify.com/s/files/1/0449/9125/0591/files/cosmological_argument_for_the_existence_of_god.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/47698814898.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_off00004b84.bin
0cd757e41df16edee4934eb275d7d4d482d891dc8db102a5e154b4fa02c02628
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B84 5292 bytes
font_01_sfnt_off00005d77.bin
cd2839123dc2b94b9b866e86a8e1e8bc9272335bb0c9964f1f152e5f86a113d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D77 9612 bytes