Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb24409ee8b32ec4…

MALICIOUS

PDF

35.1 KB Created: 2020-08-14 16:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7faf4a04d451289e1692f3eacc078dd9 SHA-1: f553fb28c272556bba0f48ecd1d512116e7e4bbc SHA-256: eb24409ee8b32ec4e4da034cb01b98eefe4b1e9b314a86425cd3ccacacefbbd5
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'cause and effect worksheets pdf grade 4'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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=cause+and+effect+worksheets+pdf+grade+4
    • http://serap.pikevillecomiccon.com/uploads/1/3/1/4/131438008/gumozip-zukefu-wafuxupe.pdf
    • http://files.clevelandbrewshop.com/uploads/1/3/2/6/132681359/1244705.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/37878631356.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/55833681772.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/ring_of_chest_vampirism.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/nufipikepuwuwoxopitanuxeg.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/wodaretepe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2629/1611/files/sensory_evaluation_of_beer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/95692036548.pdf
    • https://cdn.shopify.com/s/files/1/0431/2550/6208/files/42_constitutional_amendment_act.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/98780118950.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_off00004ad2.bin
4ed6c9ff52d1894046d13f1ee537e1c00cb8458d15e83fc2c60900dbe9248fcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD2 5532 bytes
font_01_sfnt_off00005db4.bin
7df460df364728ec6609d6399790a92b88f740ac9b636480b7c1ddfdb37cf836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 9932 bytes

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