Malicious PDF — malware analysis report

Static analysis result for SHA-256 54cc67f6b8c85536…

MALICIOUS

PDF

40.3 KB Created: 2020-08-13 05:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff6329c2e8e353efc1cd0aa71ceaffbf SHA-1: 5d605d3ab77f675e7c68ec3d74118ed4a6627eb1 SHA-256: 54cc67f6b8c855366afe5849652c1cb502179a3a50d7af9c121b065ebc1a7beb
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=interior%20decor%20magazine%20pdf', which is flagged as malicious. This suggests the document's primary purpose is to trick users into visiting this malicious URL, likely for phishing or malware distribution. No scripts were extracted, and the family is unknown due to the lack of specific indicators.

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=interior%20decor%20magazine%20pdf
    • http://files.ulmerconstruction.com/uploads/1/3/0/9/130969356/7048891.pdf
    • http://files.theraphaschool.com/uploads/1/3/1/6/131636654/2450313.pdf
    • http://files.mariannemcshane.com/uploads/1/3/2/6/132681556/funolikum-muxigemi-jefukufelujasog-xigep.pdf
    • http://files.thegivingend.com/uploads/1/3/1/3/131379578/e1e7f9.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/sizosijixewilamos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/boxozup.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/trigonometry_cynthia_young_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/72470978983.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/53099754698.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8727/files/whirpool_cabrio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/polyclonal_and_monoclonal_antibodies.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6849/files/nafuli.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/gixedajib.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_off00005e67.bin
a6a055eaee2e17f7a74b17d313de0eb4c304856af1183921e61b86754090ddf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E67 5252 bytes
font_01_sfnt_off00007033.bin
ff2174fa4082ef1c719997fe3e900af6c6d4977a6d7d7092132b53d11fc186e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7033 10640 bytes

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