Malicious PDF — malware analysis report

Static analysis result for SHA-256 db01b50054555979…

MALICIOUS

PDF

43.7 KB Created: 2020-08-25 17:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dfc5582cf02ba228f7f7cfe6eb2e6f9 SHA-1: 7b8ae52e680d655a1df9f251c2a28517442c9a56 SHA-256: db01b5005455597982e0a7792cbfeee212816402961c6403356c6d54256f7a34
130 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body text, though garbled, contains keywords related to 'cash receipt template' and the malicious URL, suggesting a lure to download a malicious file or visit a phishing site. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to harmful infrastructure.

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.ru/pify?keyword=cash+receipt+template+word+free
    • http://files.comfychemocarebagproject.org/uploads/1/3/1/8/131871871/7849397.pdf
    • http://tasodiwoz.lawlersdrivertraining.com/uploads/1/3/0/7/130775045/9464431.pdf
    • http://files.arkansascda.com/uploads/1/3/1/4/131408741/2094672.pdf
    • http://bujawiw.mchslibrary.org/uploads/1/3/0/8/130814411/e3e3b38b0d.pdf
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/sarenapazaxaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9594/0503/files/nolefewuva.pdf
    • https://cdn.shopify.com/s/files/1/0443/3425/2188/files/nidebebinowufodaxinuxim.pdf
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/50839199114.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/85839442606.pdf
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/fisalipo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/27390465280.pdf
    • https://cdn.shopify.com/s/files/1/0435/8779/7160/files/15631279835.pdf
    • https://cdn.shopify.com/s/files/1/0438/2985/4368/files/99115221403.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/xujejopurowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6002/files/e8_b1_86_e7_93_a3.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.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_off00006c63.bin
b2d927779160919cb97ab6920d3efdeb2de8e37791957b9e1e7b7f2110efad82
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C63 5392 bytes
font_01_sfnt_off00007ea6.bin
750f59a8a4510ef6cc1312a333eccd78eca2486c6e2ca2c5483c48b9eff50c15
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 10332 bytes