Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc4ab77b0ef12fe…

MALICIOUS

PDF

45.6 KB Created: 2020-08-19 01:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 544e601138ae97b5f34ce08a00968ed8 SHA-1: ee6719525b2a6bd34d84ce8a2a58521b308dd7bd SHA-256: bcc4ab77b0ef12feb565055c9084ef1c06792a464bf911231d384d888c245e56
128 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'General ledger account reconciliation template' and includes the malicious URL, suggesting a lure to trick users into visiting a malicious site. The presence of numerous other PDF links further indicates a link farm strategy, likely for SEO poisoning or distributing further malicious content.

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=general+ledger+account+reconciliation+template
    • http://vubir.misternick.info/uploads/1/3/1/6/131607163/menutuxaputas-rudinin-bevijibor.pdf
    • https://cdn.shopify.com/s/files/1/0428/8705/3475/files/chairmaker_s_notebook.pdf
    • https://cdn.shopify.com/s/files/1/0439/9595/5358/files/205861134.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83406059157.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9766/files/vopavuveragizog.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/76684147432.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/56746919369.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/xavupuminalegosavuvod.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/cartoonito_italia_tv_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/23592225016.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/95860672195.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_off00007500.bin
b4fc312c1e68ddc3271e61062f00d094d1e1141a96020dbd9b8886afa0855ac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7500 5248 bytes
font_01_sfnt_off000086c2.bin
32873845bd1ec4986925444120ecb5206ff8c7b01d6ba152bbcbdcfcd271ba63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C2 10196 bytes

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