Malicious PDF — malware analysis report

Static analysis result for SHA-256 e869aef02cf6c188…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 08:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c39d7b027c93aa1ae4f56b54d1a9823 SHA-1: 9ee464d1bdd2c6e75e08e6a1ea36bf49b63f311c SHA-256: e869aef02cf6c188acc6e8dec3765ba89e8f468b5480f214058c398e23a18b98
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily corrupted, contains text related to 'Minecraft games free for computer', suggesting a lure to trick users into clicking the malicious link. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.com/pify?keyword=minecraft+games+free++for+computer
    • http://files.glacierpilotslegacy.com/uploads/1/3/0/7/130739147/1050539.pdf
    • http://files.mccrackenceramics.com/uploads/1/3/1/1/131164063/996767d9addd2c.pdf
    • http://files.bigtrecreation.com/uploads/1/3/1/3/131379612/fasezojozixuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/18510192220.pdf
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/14879312139.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/vovojujowopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5095/files/gukoninu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/zodiduz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0966/2366/files/79833032227.pdf
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/frog_hello_my_baby.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/backbeat_go_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/2849/5001/files/59108674038.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_off000067e4.bin
a3c0954caee658f8f988aeb97fc45fe969ca756388cdba8132e2623b91592243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E4 5308 bytes
font_01_sfnt_off000079e4.bin
26d9bea5f6d40c542c5e702651e943ef5186d5f334929b434982698681243f9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E4 10540 bytes

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