Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34e0016358144ec…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 12:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9155be340522033dc03189145c01d9d SHA-1: 734f835b7b2757df4d30e095793c3def7cbbfc51 SHA-256: e34e0016358144ec437a9d3848257302e830934b89b651e8b34f26e1a8693a2a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'custody agreement template california' and the malicious URL, suggesting a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=custody+agreement+template+california
    • http://files.travelanswersbybrandi.com/uploads/1/3/1/3/131379639/9076239.pdf
    • http://files.deefitzsimmonsphotography.com/uploads/1/3/1/0/131070469/garobap.pdf
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/hotel_california_acoustic_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/88222244259.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/vofikej.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/pexefomofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/iwsr_forecast_report.pdf
    • https://cdn.shopify.com/s/files/1/0450/4194/2678/files/mercedes_benz_w123_workshop_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2629/1611/files/new_movies_online_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6179/files/comment_installer_sql_server_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/58257840034.pdf
    • https://cdn.shopify.com/s/files/1/0435/3058/4213/files/acdsee_ultimate_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/resujilatitotativesuxusis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/30837076874.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_off00006b1d.bin
26a1059b679e135c21a74fcde37e9f2203c6eab3f2cea7e6952a2be6b233e6d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1D 5484 bytes
font_01_sfnt_off00007db6.bin
610019fde1b45e21c6ef7331f2c2eae1e9a7766b67ff1e36e146e6c9316c97fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 9908 bytes

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