Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3129806832e5d00…

MALICIOUS

PDF

46.9 KB Created: 2020-08-31 06:13:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43337180592ba61d63ba4770bdff6562 SHA-1: fe8339e2c2a7a01a1ea6c2c75cf205a42ec78372 SHA-256: e3129806832e5d00ad033985001343c4a85ecf766db4fad206edf7d492d1fac9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of the primary links directs to a known malicious redirector at ttraff.com. The document body, though partially corrupted, contains the title 'Animales acuaticos de mexico' and the URL that triggers the malicious redirector, suggesting a lure to a phishing or malware distribution site.

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.com/wix?keyword=animales+acuaticos+de+mexico
    • https://static.usrfiles.com/ugd/b8c837_cc5b990f1f2f41de825396a208c22ef8.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf29c5708f764ffc9cd337e655c13732.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_07a673de1dd64b7899f2fa99791ad6ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_22cf1212154446df87a2a48f71669641.pdf
    • https://static.usrfiles.com/ugd/f0f215_22e4d5e5487741898edc2c95a032f771.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/kijewuxejivofulezoke.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/radirevudutala.pdf
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/fifeguwipuzaxebofawevurew.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/aeonair_dehumidifier_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/destination_delf_a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6d5eecba3124a9682269b690e4c0864.pdf
    • https://static.usrfiles.com/ugd/15d534_8e1dc46e086040d0b1cf59b276b3f74e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f8b68fe90ae4f82ad38b3d9843c69e4.pdf
    • https://static.usrfiles.com/ugd/362633_a52f582f653e49fd80be411430624bf4.pdf
    • https://static.usrfiles.com/ugd/0c41e7_4f7edc137ee949fb8875d6742a19aa19.pdf
    • https://static.usrfiles.com/ugd/d1d005_5943d3c0afff4bfa9ae6d59245753a6a.pdf
    • https://static.usrfiles.com/ugd/4d400c_2a124f649f32438990b6f721ac657e15.pdf
    • https://static.usrfiles.com/ugd/9219f8_27341df2090b4b2482ee69e987f4e86c.pdf
    • https://static.usrfiles.com/ugd/b444d4_36e1e96343fb4d419c8f5c12ee8fb2d3.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_off00007663.bin
22294b8b1e4c9b2e618e5a3924335980ee5438a31f9f7d45c60953f45f6a187e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7663 5044 bytes
font_01_sfnt_off0000876f.bin
80449b8f785fec00ab8d18a9056b8c909b282ea2c4307786fcb046aaa753e171
pdf-font-stream PDF embedded font (sfnt) at offset 0x876F 11448 bytes