Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9f0305ae6d3c99…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 13:28:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87cc500ac2542c6fab2e69bf35b6ba51 SHA-1: 6653bb4cfe2da166155ee9384430b295c82a04bf SHA-256: cf9f0305ae6d3c9976c4907c52eab25cd3810434583cccadd9070322d4e8ee98
200 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1204.001 User Execution: Malicious Link T1566.002 Phishing: Spearphishing Attachment

The PDF contains a malicious redirector link to ttraff.com, disguised with a lure about editing PDF issues. It also features a large number of external links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection. The document body and heuristics indicate social engineering tactics, specifically instructing users to interact with command-line interfaces, consistent with ClickFix attacks.

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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=unable+to+edit+pdf+in+adobe+acrobat+reader+dc
    • http://rajiraj.incyprusvillas.com/uploads/1/3/2/7/132712207/kokutevu.pdf
    • http://files.breakyrheart.com/uploads/1/3/2/3/132302764/fukip_wuvudutubuno_dedoze.pdf
    • http://files.jeecontentandcopy.com/uploads/1/3/2/6/132681033/a712e4a3ab.pdf
    • http://files.adoxian.com/uploads/1/3/1/6/131606758/944a8.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/15500602833.pdf
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/34609927365.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewefezagabujam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/gufatakapijavepe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/belifap.pdf
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/taxosunipogumupisabofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/bematulisuwedori.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/27824019572.pdf
    • https://cdn.shopify.com/s/files/1/0437/3128/8218/files/rizuzariw.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/excretion_in_arthropods.pdf
    • https://cdn.shopify.com/s/files/1/0432/1397/9812/files/gegero.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/71203564156.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_off00006ff9.bin
4a07bd7d307b2641e684485c238d4f8e98015d3f5c969c1c6c1372d88c44bcdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF9 5104 bytes
font_01_sfnt_off00008160.bin
19c8fdfc7a367798cdbcfe5ddffe5ea70a9e6c99ce1d6b7217f52a92f35974b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 10252 bytes