Malicious PDF — malware analysis report

Static analysis result for SHA-256 c771446a6a645506…

MALICIOUS

PDF

76.0 KB Created: 2020-08-30 09:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 608132af2fc3270d3606d25fe9754813 SHA-1: 385f72a73437b786ed52a39749dea6a28b8be73c SHA-256: c771446a6a645506fc5f2dddc9596450abb3286138dd5baad3f23260f6a8584b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://ttraff.com/wix?keyword=kirby+star+allies+ost+extended', is flagged as a 'PDF_MALICIOUS_REDIRECTOR_LINK'. This suggests the document's primary purpose is to lure users to malicious websites, likely for phishing or to download further malware.

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/wix?keyword=kirby+star+allies+ost+extended
    • https://static.usrfiles.com/ugd/b56239_6d49ac2d57ab4b8f9b52e574e0533fe4.pdf
    • https://static.usrfiles.com/ugd/26938b_c417f13b118d4573b45e86a44d154259.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dcf7ec2b9304b93a502b2df4ea6278d.pdf
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/vajebizexafabuxokafesupan.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4810/files/bangla_movie_bapjaner_bioscope.pdf
    • https://cdn.shopify.com/s/files/1/0432/2666/1023/files/39383253068.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/linewovonoxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/sick_puppies_riptide.pdf
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/76679017162.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/hinkley_point_c_pre_construction_safety_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/faneg.pdf
    • https://cdn.shopify.com/s/files/1/0428/6831/0172/files/46707839258.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/9423370650.pdf
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/65897276579.pdf
    • https://cdn.shopify.com/s/files/1/0441/2823/9768/files/61388810007.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d50b.bin
467c49a8a04fd1eba1633d7c00cc21118faf68217ed3f7b18fa1ee82e8091963		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD50B 4236 bytes
font_01_sfnt_off0000e40b.bin
5b10177846c9c2b11cb247a767f1fa783994e1af30eb12d8aaa950ef2849a8c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE40B 5100 bytes
font_02_sfnt_off0000f574.bin
7693d3209cb9f8c7d6b639c72e4292525d87ec5edb212210fb482f98983db74f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF574 13696 bytes

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