Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a8c6cfb04819fca…

MALICIOUS

PDF

53.4 KB Created: 2020-09-01 01:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 513720ac39b154a1f76ca26f3f560491 SHA-1: fcf0cbfb5cd3966fa205e588e7679fec0cdbe0d6 SHA-256: 4a8c6cfb04819fcabd5268e911566c6611e513621df952632be338a4de6eaf0b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=export+s3+bucket+name+cloudformation'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm heuristic further suggests a tactic to artificially inflate search engine rankings or distribute malicious links. No scripts were extracted from this sample.

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=export+s3+bucket+name+cloudformation
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/como_sintetizar_un_material_elastico.pdf
    • https://cdn.shopify.com/s/files/1/0434/6970/1280/files/colorless_eldrazi_stompy_sideboard_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8609/4229/files/wugepusitedirerubof.pdf
    • https://cdn.shopify.com/s/files/1/0464/9562/9464/files/25758260000.pdf
    • https://static.usrfiles.com/ugd/b8c837_808dcbcd55bd42d580d2a6857c57554a.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dec77c6d46b470ea3f56922e1c7dda0.pdf
    • https://cdn.shopify.com/s/files/1/0434/1576/5159/files/attractor_factor_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/86046775374.pdf
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/capacity_assessment_form_2.pdf
    • https://cdn.shopify.com/s/files/1/0464/5968/2984/files/dixofawugesume.pdf
    • https://static.usrfiles.com/ugd/50de67_0b429bb1d09740668038938971eb43a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e90bf73675f04c30b8fc7ed03ca40738.pdf
    • https://static.usrfiles.com/ugd/4b7290_40933b9295f94facbd5f3356903c2512.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e3537f3090f4edbaf929c0d4e6f02a9.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_off000087c9.bin
2c8253b50b53d8d22f395ef78992c74ced803933fb0163b8e105f13d6291799d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 5692 bytes
font_01_sfnt_off00009b19.bin
20515fa6c5a927d9b6ad61af52353cb7a84076aeae4cec89568ff8af78d06047		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B19 14656 bytes

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