Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cbcbf0981d1ca4…

MALICIOUS

PDF

56.0 KB Created: 2020-08-22 08:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c99a9e267544cce37bdfb048bb15089 SHA-1: b26838ef3d1bab0208baecd1dd704980d523f1fa SHA-256: 44cbcbf0981d1ca47a51e1f19eccc44db405eea29aec8de3dcae249456bfc1a1
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or phishing attempt. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bowgun+mhw+guide. The document body contains obfuscated text and the URL, but no executable scripts were found.

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/pify?keyword=bowgun+mhw+guide
    • http://files.fight4freedom.ca/uploads/1/3/0/8/130814101/a99634ce3a1.pdf
    • http://wepugaf.texastyp.org/uploads/1/3/1/4/131410007/jezawaboguguf-kamiwefab-xuwadu.pdf
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.pdf
    • http://files.acrowscalling.com/uploads/1/3/1/8/131856372/fuwexupab-konuzel-funomir.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/como_traducir_de_aleman_a_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/full_cfop.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/speaker_meaning_in_semantics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7647/5290/files/vafuvilotemolugum.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/23644493168.pdf
    • https://cdn.shopify.com/s/files/1/0440/6303/1448/files/34902232156.pdf
    • https://cdn.shopify.com/s/files/1/0437/5478/2869/files/24767190736.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/letter_format_in_marathi_for_society.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/tutekelabufapoxor.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/bizar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/71572767582.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/tanajisifumeraxijika.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008856.bin
25da3a09d09de0e0228936c50c822cdf3abe797c923dff5b847bb23035d6eef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8856 4664 bytes
font_01_sfnt_off000097ff.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97FF 1800 bytes
font_02_sfnt_off0000a08d.bin
b8ada148c665f31be0efac30b5e15618567c3a8b97eba4b4fc7d00385dfeeae3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA08D 10480 bytes
font_03_sfnt_off0000c462.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC462 4324 bytes

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