Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb37e9e8616239d4…

MALICIOUS

PDF

33.6 KB Created: 2020-08-04 00:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49983fcdef46b51b03c6237bc90f2766 SHA-1: b5cb9cd713e17ebc1149943f83fdc915f92ae8cf SHA-256: eb37e9e8616239d49873ccdcf1f2449bedcece79332471ec9fb60ffdb9679f41
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Destination a2 pdf free download' and the malicious URL itself. This suggests a social engineering lure to trick users into clicking the malicious link, which is likely intended to lead to further compromise.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=destination+a2+pdf+free+download
    • http://files.mecha-brand.com/uploads/1/3/2/6/132696174/sanadubisot-sivuxigepazat.pdf
    • http://files.nikesitesummit.net/uploads/1/3/1/4/131437493/1636258.pdf
    • http://files.chainoflifemovie.com/uploads/1/3/0/7/130739028/bolabu_tobugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/checkbox_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/6408/2073/files/wasoweworites.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/49728775319.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/time_servers_address.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://cdn.shopify.com/s/files/1/0430/9388/5089/files/15405487527.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6040/files/92440260584.pdf
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/12355523806.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
    • https://cdn.shopify.com/s/files/1/0437/4183/9511/files/zuzuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/28449616381.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_off00004506.bin
bb34d936a7369b8a444262023f0db8d8e4efb0d8df33c002ac3ce2dda7f1cbba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4506 5256 bytes
font_01_sfnt_off00005715.bin
cb0031b35d7fc085f5d76a083da91f922a34251eb2b7174de64bcade8f34459a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5715 10144 bytes

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