Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c77264fbe6b094f…

MALICIOUS

PDF

54.8 KB Created: 2020-08-25 01:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b90faa43574827d9cef8eb9195757afd SHA-1: cab8d4f08eaace3f265c4f60065e3efa0def430c SHA-256: 9c77264fbe6b094f98e62759e6f57072a92f21a30ef6584ce724b4056805d134
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The primary attack pattern involves tricking users into clicking on a link that leads to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=steve+jobs+stay+hungry+stay+foolish+pdf
    • http://files.seizediem.com/uploads/1/3/1/4/131453934/wimokitototukuwemubo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/82427322242.pdf
    • https://cdn.shopify.com/s/files/1/0461/1476/7012/files/dotidupovufasun.pdf
    • https://cdn.shopify.com/s/files/1/0431/8301/4048/files/malos_habitos_alimentarios.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/thyroid_guidelines_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/90664011034.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/beloxatuzuxapesozimafo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/chirmi_ra_dala_char_rajasthani_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/cisco_catalyst_2960_x_series_switches_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0460/0525/6353/files/gina_guidelines_for_pediatric_asthma_2019_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/welenivoredatu.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_off000073c1.bin
1d73e36ec159a2ed03bd96aa20808ec9cf9c85c9449a3e006b209d0fcadb94b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C1 5668 bytes
font_01_sfnt_off000086fd.bin
cd6025d98c2d78e624bda49c5c84a2bd801e00d76cc6b05f9263a7db70bf5e9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86FD 10388 bytes
font_02_sfnt_off0000aac0.bin
f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC0 16164 bytes
font_03_sfnt_off0000bfb9.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB9 4324 bytes

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