Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac84b21348ec9c6…

MALICIOUS

PDF

44.9 KB Created: 2020-08-02 21:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc84bebd7ef951f381e9ec5a03f182c6 SHA-1: 46e1c87355019e78d09ff2b1cee655e7ad01d29e SHA-256: bac84b21348ec9c67375b78a13d0a7c170efe4c80ef4ca21bfbe23b48b3adc1d
200 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell T1204.001 Malicious Link

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector. The document body also contains instructions that mimic social engineering tactics, specifically instructing the user to copy and paste content into a terminal, consistent with ClickFix attacks. This suggests the PDF is designed to trick the user into executing a command that likely downloads and executes a second-stage payload from the provided malicious URL.

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.ru/pify?keyword=disable+xbox+game+bar
    • http://files.movehelix.com/uploads/1/3/1/4/131408620/leboburetabi.pdf
    • http://files.envision-benefits.com/uploads/1/3/2/7/132740978/gelasodit.pdf
    • http://files.livinghistorylesson.com/uploads/1/3/1/3/131379828/1263424.pdf
    • http://files.collettivoverso.com/uploads/1/3/0/7/130775364/sabixuzezej_kubisalufusezem_mefunumo_xuzuxuduwati.pdf
    • http://files.bostonbarbc.net/uploads/1/3/0/9/130969966/zilud-kanapef-pitiredisabuwuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/xumiludo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/nojumetademu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/zizugukox.pdf
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/21469923818.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/sivevobevegepip.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/jinamegawamusugolejuzide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/simajiremojemomiwuwukit.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/buzumaromejokopikam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/61771852040.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/62836676797.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/solovizotote.pdf
    • https://cdn.shopify.com/s/files/1/0435/1809/9615/files/47137266304.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/xewiwaxebajemoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/bexazudiluw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/52163316561.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_off000071ef.bin
9110d6e0ae65a52950f226c76e3b7dddb863aea96d5d19855455c2e0f61403e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 5212 bytes
font_01_sfnt_off000083a0.bin
43f010c39fc5829045ee416e04c30b38dc694f75dcbf2aaaa4dafad04f93e60f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 10156 bytes

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