Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd60107eefc5ea8…

MALICIOUS

PDF

36.7 KB Created: 2020-08-19 03:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd52c6da1f5f419efda08917be4fd0f1 SHA-1: 89a8fe8609b70e832d3f9fc8f9a52d8fb261cbcd SHA-256: bdd60107eefc5ea897fd95b684feda66006c976c11ee0433cdb48fe0b97a91b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a direct link to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, and also references 'car images' as a lure. The presence of a visible LOLBin command execution instruction indicates the potential for further malicious activity beyond just redirection.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=alto+800+car+images
    • http://files.blwcenter.org/uploads/1/3/1/0/131070561/d954507.pdf
    • http://files.thetntmteam.com/uploads/1/3/1/4/131438056/fb5d6142c.pdf
    • http://files.the18thmasonicdistrict.org/uploads/1/3/0/9/130969862/735e59.pdf
    • https://cdn.shopify.com/s/files/1/0434/0344/4380/files/53752882564.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/92589400807.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/70388823180.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/juvapes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7488/6563/files/15069392248.pdf
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/boy_scout_uniform_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/davemuvotorukofijix.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/lumekitinosajofobofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/curl_post_parameters.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/adobe_virtual_printer_free_download.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_off000051fe.bin
af42bc73ea9b8004468ba3310afd5087d2ecd8a059343d0fa787a9c977d6237f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51FE 5444 bytes
font_01_sfnt_off0000645c.bin
7f20a5953fded2dbfe3b771da62a004e822aecc63531d173f19e953a12e6a4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 10004 bytes

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