Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4a1d125626fd98…

MALICIOUS

PDF

48.5 KB Created: 2020-08-08 23:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b2417fbd3a0a650569686141ac938c3 SHA-1: cc37b866a7ca26633d908ddf51ef4a03544bf59f SHA-256: ea4a1d125626fd98de3154453816505178b26cd9422cab089696bc0160f5c6a0
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to trick the user into visiting a malicious website by presenting a seemingly benign worksheet.

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=order+of+rotational+symmetry+worksheet+pdf
    • http://files.vivallbright.com/uploads/1/3/2/6/132696104/dodowija-zoludezumisexu.pdf
    • http://files.columbinemiddleschool.org/uploads/1/3/2/3/132302716/pimolirisokojel.pdf
    • http://files.wisconsinbaroque.org/uploads/1/3/2/7/132740949/povozaxagoleje.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/logadoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2265/files/540ez_instructions_2014.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/71353465707.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/allianz_travel_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/lusux.pdf
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/62639080953.pdf
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/lasugujiganakizogitifep.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/mysql_running_sql_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/27490858348.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/bofapafaxisuwalesimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/vmware_workstation_14_key.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/
    • https://cdn.shopify.com/s/files/1/0440/5536/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068a4.bin
d336b0a35d92e99d426fca224e7a2a403e4b236eabed8beb3905f56f53c91c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 5568 bytes
font_01_sfnt_off00007b7b.bin
78656dd71c71de7772fc7a376cf7212e4d3cfd2023757bb0a6f7fb714fa19ad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7B 10440 bytes
font_02_sfnt_off00009f2a.bin
70180b97a9b9fe0de1e0c05b06d733d04658c9f7a2923a3eee6842afe753d47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F2A 16152 bytes

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