Malicious PDF — malware analysis report

Static analysis result for SHA-256 b41b20ae41624e88…

MALICIOUS

PDF

34.8 KB Created: 2020-08-08 18:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e91ded0d2f8b962a1603529ad7b397b SHA-1: 87da8967f3eadb56e5a39c6096cd65854e970e5d SHA-256: b41b20ae41624e882c8b9eea15b942aee7b75b86624932062bceda4afadab639
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/pify?keyword=anarchical+society+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=anarchical+society+pdf
    • http://files.bcox1.com/uploads/1/3/1/6/131637658/nesajatofot.pdf
    • http://files.moannasworkroominteriorsandstaging.com/uploads/1/3/0/8/130873983/fodiruxeze.pdf
    • http://files.tctinternational.net/uploads/1/3/0/8/130874587/welofipeje.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/fosubazosufelamikojiled.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/71651695406.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/vojutuxodagosasak.pdf
    • https://cdn.shopify.com/s/files/1/0432/7528/8742/files/vbs_export_csv_to_excel_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/12417556810.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/mawixifozaguf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/degejete.pdf
    • https://cdn.shopify.com/s/files/1/0429/9679/3503/files/92319076452.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/65036886673.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/nixunerobijenefaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/12_angry_men_sparknotes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/15276139006.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_off00004ad9.bin
c525f481531978132d81f0096f0ccc6fd4a75167e272359e6b31240b63e6bdc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD9 5336 bytes
font_01_sfnt_off00005d01.bin
89bfbd3f6f13d167be97c64415b06c70929eb031acbc8bbbfd6679bd401b4689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 9812 bytes

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