Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0bb986f48514f4d…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 03:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58f4535b6a8c04e09cb2cb1aab235df5 SHA-1: eca1d9a33d0a26ff1301ec5d34c867af067f4644 SHA-256: a0bb986f48514f4dad49c9a1544049b7c989a2c9838dbfa0ec72e5c07e27f6af
120 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to a link farm designed for SEO manipulation. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=pdf+converter+to+word+ipad`. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution, under the guise of a 'PDF converter'. No scripts were extracted, limiting further analysis of the payload.

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.ru/pify?keyword=pdf+converter+to+word+ipad
    • http://files.emilykund.com/uploads/1/3/1/3/131379443/5175481.pdf
    • http://files.elsewiseart.com/uploads/1/3/1/3/131383651/7498293.pdf
    • http://files.northsidecolumbia.org/uploads/1/3/1/4/131483249/9153414.pdf
    • http://files.wickedsweetrentals.com/uploads/1/3/0/7/130775848/9af87e1237.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/99002173778.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/agile_acp.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/67397848840.pdf
    • https://cdn.shopify.com/s/files/1/0436/9219/5993/files/miganaforines.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/tigup.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/fivewojofivotimikeriveri.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/nesesibenebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/59964668208.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/sotozofitinemitozonumo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/sijojopifinazomiwaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/75857288811.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_off00006d98.bin
0caf1757423980918ade5da7b5f01f72ef0dafa0aef83f6726f0cacc12b7592e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 5092 bytes
font_01_sfnt_off00007f1a.bin
32f7b429ea3139ec4efcea0a45c4cd74525d39124874cdb55d76755e6c7e2361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1A 10212 bytes

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