Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4768f31d4d9d168…

MALICIOUS

PDF

40.5 KB Created: 2020-08-15 17:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b2ec8c92e3cad1b872d49da4fbc6722 SHA-1: 2457fa8f527777431d3a344127e73acef633dbbc SHA-256: d4768f31d4d9d16805238910ff166fad40901b5bc3a4a192e34d7cff54b495eb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, also contains the malicious URL. This suggests the primary goal is to lure users to the malicious redirector, likely as part of a phishing or scam campaign.

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.cc/wb?keyword=acolia%20definicion%20medica%20pdf
    • http://files.mycolorpainting.com/uploads/1/3/0/7/130739202/wojubitibowase.pdf
    • http://files.caseygetscreative.com/uploads/1/3/1/6/131606492/5547007.pdf
    • http://files.rejoicezimbabwe.com/uploads/1/3/2/7/132740805/dfefd.pdf
    • http://files.scott-foxpuppypreschool.com/uploads/1/3/0/8/130813765/5247009.pdf
    • https://cdn.shopify.com/s/files/1/0439/6027/1006/files/ingegneria_genetica_zanichelli.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/list_of_cell_organelles_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0432/4491/2802/files/wamotubuzetuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/ntp_time_server_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/9801/1816/files/56264890738.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/5086255962.pdf
    • https://cdn.shopify.com/s/files/1/0435/8530/6782/files/kutijaforawenetagojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9123/7791/files/artificial_intelligence_in_military_applications.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/wekugagut.pdf
    • https://cdn.shopify.com/s/files/1/0446/3738/8963/files/american_psychological_association_format_for_research_paper.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_off00005e36.bin
99e71c1d1ff24b7526dc729157a457bb293ab1d632b72fa79f552a13841029bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E36 5016 bytes
font_01_sfnt_off00006f2e.bin
473da75692f2a74faac735c35bfe1df24dfe342f5fa93fd763ed4f3c575eec63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2E 11168 bytes

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