Malicious PDF — malware analysis report

Static analysis result for SHA-256 c443a62299ee7e46…

MALICIOUS

PDF

57.9 KB Created: 2020-09-01 08:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83667a90fd9661e16413da122259b491 SHA-1: 62f6e5573980acb0e48e529104bc329e35c36e1c SHA-256: c443a62299ee7e468155106c18094751d28387cc00c93857dd9eaf75ff708a21
120 Risk Score

Malware Insights

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

The PDF file contains embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'business justification letter template' and includes the malicious URL. This indicates a social engineering attempt to drive users to a malicious site. The presence of multiple PDF links, many pointing to Shopify, suggests a link farm used for SEO poisoning or to obscure the final malicious destination.

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.me/wix?keyword=business+justification+letter+template
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/custom_sonic_sprites.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/diagnostico_de_enfermagem_nanda_anemia_falciforme.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/16698627732.pdf
    • https://static.usrfiles.com/ugd/b8c837_b71340a52ce44950926d405c7b26cc05.pdf
    • https://static.usrfiles.com/ugd/4c1554_671ffc96d03d4d70bfbe363166b3177f.pdf
    • https://static.usrfiles.com/ugd/cbdbb6_3038a5cb55764ebe9fbff21a1f589aa9.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_bf2230135dcb453c8d04690209a9c62d.pdf
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/95531761203.pdf
    • https://cdn.shopify.com/s/files/1/0431/5473/5264/files/livejonozez.pdf
    • https://static.usrfiles.com/ugd/760101_c7600d83e8504b93abc708791903f8ae.pdf
    • https://static.usrfiles.com/ugd/d94ae5_09a9322104ea445694337edba9bebc66.pdf
    • https://static.usrfiles.com/ugd/d54300_09c7df215d214dd8a9913a35570bf3fd.pdf
    • https://static.usrfiles.com/ugd/fd30ac_25167d364e0e4cce924b59e24fda633c.pdf
    • https://static.usrfiles.com/ugd/aec2ea_c9ff910599ff4ca1821703e961b45846.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_off00009ae4.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE4 2828 bytes
font_01_sfnt_off0000a4df.bin
ed8f8f228def48b28e7f1c8481535be26ffb77b553f269d93c22d04e3b7d3acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DF 5284 bytes
font_02_sfnt_off0000b6cf.bin
d8f28bc2f8195da202083f842e5303b56bda465e495db00937d3c5a2fb1bcf9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB6CF 10500 bytes

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