Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5c8aeaa4744955…

MALICIOUS

PDF

57.8 KB Created: 2020-08-13 23:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0589bb3b4f2007454e769d3f9564859 SHA-1: 77fb742d49b7d0cf64c7add1c18d2c3ac1f65c83 SHA-256: 9d5c8aeaa4744955e806aa8906ebb7587575206c4767afcf8f6aaa5f7182129d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF file contains a link farm and a malicious redirector URL, indicating a phishing or social engineering attempt. The document body and heuristics suggest the user is instructed to copy/paste content into a command-line interface and to disable security software, likely to facilitate the execution of a malicious payload. No scripts were extracted, limiting the ability to determine the exact payload or persistence mechanisms.

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=anaconda+python+32+bit++windows
    • http://files.addedsouls.com/uploads/1/3/0/8/130873875/8855784.pdf
    • http://setevi.habitatriwestbay.org/uploads/1/3/1/3/131383483/117343638b.pdf
    • http://files.permittedtopause.co.uk/uploads/1/3/1/4/131407406/4010034.pdf
    • http://files.rlcraftvinylstore.com/uploads/1/3/1/4/131453990/5af30c11ec.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/rejivetesoniwewupufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/dilolekibufiwapagibofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/berupavapow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdf
    • https://cdn.shopify.com/s/files/1/0440/5772/3030/files/calculus_early_transcendentals_11th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/http_filesify._com_wr6jfm.pdf
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/kuxikowukefogewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2279/files/certiorari_and_prohibition.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/helvetica_font_dafont.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7621/files/tiginoloxozu.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_off0000a148.bin
be3df73e26110c627cae3c6c7d705973a66d5c11e66c7705eb91dab48b7c82b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA148 5652 bytes
font_01_sfnt_off0000b491.bin
1252b89b98aeadd1cf78126a6f66262ba4767562f283bceff9eacf467e85b094
pdf-font-stream PDF embedded font (sfnt) at offset 0xB491 11816 bytes