Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dce6a9630cde108…

MALICIOUS

PDF

34.1 KB Created: 2020-08-23 14:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68fc2b20cd9c6e97f3e374e9671e580e SHA-1: 45a4da084e600199d4dc5ab7a7c43e06592264ee SHA-256: 4dce6a9630cde10824c9b21213e07d55efd2725c8f9d03a32d3c02d0527727f4
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'character sheet'. The primary malicious URL identified is ttraff.cc, which is known to host redirectors. The file is likely a social engineering lure to drive traffic to malicious sites.

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/pify?keyword=3.+5+e+character+sheet+editable
    • http://files.ideallyfreely.com/uploads/1/3/2/7/132712233/sapokinovep_lanipazoditabaz_fijulakubewoxej_zafesosusofav.pdf
    • http://files.shannancalcutt.com/uploads/1/3/0/8/130874154/5c28f0f6.pdf
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdf
    • http://files.marcyheidishbooks.com/uploads/1/3/1/6/131637014/2be10ef.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/67050939075.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/xasovet.pdf
    • https://cdn.shopify.com/s/files/1/0434/0600/0282/files/28988002731.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/vawelojujijofoxonapopu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/69026282854.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/cabergolina_dosis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/radeziwiwilajumigetadad.pdf
    • https://cdn.shopify.com/s/files/1/0447/2153/7180/files/all_full_form_list_of_computer_hardware.pdf
    • https://cdn.shopify.com/s/files/1/0434/1864/8732/files/movimiento_rectilineo_uniforme_variado_ejercicios_resueltos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1123/files/kilolebaxusitetepadivo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/tobenoxikizodumulitipam.pdf
    • https://cdn.shopify.com/s/files/1/0435/0912/1184/files/xupomenenovobax.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_off00004789.bin
39febc9590b6e61bf2e6a0ae9ed4dbd8a101d390fdd61b0d4b02f715f7d7688b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4789 5392 bytes
font_01_sfnt_off000059c5.bin
af0f1567e1da1bd2a50af5a9dbe5894052a5858b2f2f5fc1cfb50d8344154e81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C5 9928 bytes

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