Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5183812dcb7ec4…

MALICIOUS

PDF

51.6 KB Created: 2020-08-30 16:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d65b91b4fb202c2724da6dd80dbef90 SHA-1: 604ec07221e8501ed99632dd73100518aba0028f SHA-256: 7a5183812dcb7ec49a7c7c955b532f96f7b883fc53a5e2920c19ab9b15cdb283
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Youth sports business plan' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

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.link/wix?keyword=youth+sports+business+plan
    • https://cdn.shopify.com/s/files/1/0436/3275/4841/files/49231636493.pdf
    • https://cdn.shopify.com/s/files/1/0464/2317/9416/files/bmw_financial_report_2013.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/22854084899.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/sqlite_viewer_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0451/9487/0935/files/10242443661.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/pufisurivikasez.pdf
    • https://cdn.shopify.com/s/files/1/0440/9045/8264/files/usmc_snco_promotion_warrant_template.pdf
    • https://cdn.shopify.com/s/files/1/0462/5183/5543/files/sesopob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/asymptote_3d.pdf
    • https://cdn.shopify.com/s/files/1/0439/5833/7694/files/titans_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/5455/0440/files/pulse_code_modulation_tutorials.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/terebomenigasopugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/27092287620.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_off00007f56.bin
5cf5d770a47517bf2260dc14df47d5e9eb567debea31176fd70e7576a50ed8d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F56 5008 bytes
font_01_sfnt_off00009014.bin
9a1ef56244312dc7e0b41543f993f1c51f166f5ccb3286402c97dd46e1198e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9014 6184 bytes
font_02_sfnt_off00009f0e.bin
b60480e9f83ac5ace10baa5525ff445e8f32e48d9721a27876275121c0c8437e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F0E 10116 bytes

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