Malicious PDF — malware analysis report

Static analysis result for SHA-256 964f043f3c080717…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 03:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6633f7b4209ed1c6546062387471c468 SHA-1: bc7492394d5b6f3c6b6b4dcea5003174d264a337 SHA-256: 964f043f3c0807177fa6568d540dff925aee156aa6005e8ea5beb4e659efe3e4
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body is heavily obfuscated and contains a URL that appears to be part of the redirection chain. The presence of numerous links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination, which is likely malicious.

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=pcr+principle+pdf
    • http://fesigeg.icollie.com/uploads/1/3/0/7/130775413/kefegupoxe.pdf
    • http://zamup.kansas4apowerlifting.com/uploads/1/3/1/4/131408024/zabekaku.pdf
    • http://files.compassionate-language.com/uploads/1/3/1/4/131406893/2f62994bafcffa7.pdf
    • http://files.angrybooch.com/uploads/1/3/1/1/131164202/tilow-xomurup-gebazijejekew-lixuref.pdf
    • http://files.carlabrooksphotography.com/uploads/1/3/1/3/131380842/2401135.pdf
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/goluneg.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/vuvuwub.pdf
    • https://cdn.shopify.com/s/files/1/0436/9835/6392/files/rimujosedugufod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/29198119041.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/712708712.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/32555702560.pdf
    • https://cdn.shopify.com/s/files/1/0446/1549/9939/files/gate_mathematics_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0337/8839/files/livurixuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/kuzarilapitesunifemax.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5191/files/tifuvopusifelol.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_off00006b48.bin
69a0a6c67146b4188dde6414f85d085e382c3a31a358d99393f3d826cadb9e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B48 4764 bytes
font_01_sfnt_off00007b92.bin
b9a86be8138368d9ff14c1a79a4d92bb3438ef98125e0e9107c45f8b51134ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B92 10424 bytes

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