Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18fed79d9a63d16…

MALICIOUS

PDF

34.7 KB Created: 2020-09-01 19:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54012a88dab92901cdf93c7790e23942 SHA-1: e3badc94104a8512abd96447a5777e6c0bfd017c SHA-256: a18fed79d9a63d16b9e67cb165f80f4332b126cbe332bc25a72289f35ee352b8
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains the same search query as the malicious URL, indicating an attempt to lure the user. The presence of numerous links to static.usrfiles.com, combined with the malicious redirector, points towards a campaign distributing potentially harmful content.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=bharat+movie+slow+motion+song++1080p
    • https://static.usrfiles.com/ugd/f4de5e_bc8cbe9bea5f4a2c9ab45be7ffc1607e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8f9203f2bd8442da0d253efdafe0730.pdf
    • https://static.usrfiles.com/ugd/87a178_ddf0c15e3d86412c8d0a3153fe23b695.pdf
    • https://static.usrfiles.com/ugd/384ea4_4275aed87b3741f78fa8228455b02c57.pdf
    • https://static.usrfiles.com/ugd/5b9365_cde52371ad0042be9a18dd7492b0c4ff.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_200e6809fe1e4badad9c1d4969ac853c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d51f0409b5254051a863753429337874.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2f482353dc9401d8619a086b667ae32.pdf
    • https://static.usrfiles.com/ugd/8b2c09_1e29557f5fd047588e7eaba597ce7dff.pdf
    • https://cdn.shopify.com/s/files/1/0465/2456/3614/files/25120760498.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5244/files/afrikaans_english_dictionary_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/gibunogudibomisodov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7240/files/sample_audit_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdf
    • https://static.usrfiles.com/ugd/26481d_bbf66021626d40048c692ce25c892fc2.pdf
    • https://static.usrfiles.com/ugd/b8c837_b78055f4d46e43aabdc759bd590ecc76.pdf
    • https://static.usrfiles.com/ugd/2ca09c_30f2dabbd0b7460d8e7352a7b685c8b8.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_off000047ce.bin
7e5a2cd9c9e9c6b183ded9ae76dd24cbd20cd3541427924caffefce2638c67f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x47CE 5820 bytes
font_01_sfnt_off00005b91.bin
8f85ad09c66d3307a6cca6f4ee9f25576e1103c19a22412ef112ac4296445d31
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B91 9968 bytes