Malicious PDF — malware analysis report

Static analysis result for SHA-256 d007a3ead1333ab3…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 00:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 694ace680931a462d3368996d883e871 SHA-1: 46c771057f2e4bcca927699da8b4c6b870116937 SHA-256: d007a3ead1333ab3de7b338c079c53f240f3e345cab901b81fd2c90137d552b5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO poisoning or to direct users to malicious content. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=numero+icc+llamaya', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains this URL, suggesting it is the primary lure. The presence of numerous other links, including to shopify.com, indicates a link farm strategy.

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/wix?keyword=numero+icc+llamaya
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72518400380.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/apoptosis_and_cell_death.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/webmail_uth_tmc.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/vehicles_in_7_days_to_die.pdf
    • https://cdn.shopify.com/s/files/1/0436/0667/1517/files/71031949755.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6f2e82f2056476c8f128984f862d88f.pdf
    • https://static.usrfiles.com/ugd/87a178_10864fe4e96d44148722122ca4759b33.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_66e54e33ac304a57ad1ae6434b7dec4f.pdf
    • https://static.usrfiles.com/ugd/6cf392_28ce39ab52da4e88aae19a4c271455cb.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_d1d110d9c06b41159122e8e669647106.pdf
    • https://static.usrfiles.com/ugd/10e3af_e9059f5789674d44b2597f0758bf5440.pdf
    • https://static.usrfiles.com/ugd/b8c837_2857027b6bdf4e08b0a0cc143409fb2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac398deca5044b7582632b355e49fdfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_844f99191be048459ebf93f46e03fc78.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_off00006833.bin
f9a7df4b04542295eefb5e9f1c2f33e079028029c112ab743931e10d7d70b574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6833 4840 bytes
font_01_sfnt_off0000788c.bin
7f8cecf0c8119484865596e178ab38e83afddb85543d768d045797f7bf67b3d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 2188 bytes
font_02_sfnt_off00008253.bin
969fadff526fe9885f807ed96ffe26001ae0351bef79d8d284573845cebc1203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8253 9996 bytes

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