Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61f641a1d072865…

MALICIOUS

PDF

45.2 KB Created: 2020-08-25 03:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4264b2b84b395b68760a1053694c20e2 SHA-1: 5c507d2f918853b3a3424fc2fb4a44cab28e0500 SHA-256: e61f641a1d07286553c604f56061d0699ed6e7775ca43f48fb2339026d8dd4a0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.cc/pify?keyword=procurement+management+plan+template+excel', is identified as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking this link, likely leading them to a malicious site or download. No scripts were extracted, but the heuristic firings strongly indicate a social engineering attack leveraging a fake document lure.

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=procurement+management+plan+template+excel
    • http://ribifefes.bigredlocksmiths.com/uploads/1/3/1/4/131453950/6f41299.pdf
    • http://files.brookesstreetkindynambour.com/uploads/1/3/1/4/131453284/buvaradepew.pdf
    • http://files.leelyte.com/uploads/1/3/0/9/130969478/wedekaxunive_rovobipifedan.pdf
    • http://files.ridgeap.com/uploads/1/3/2/7/132741339/2238836.pdf
    • http://files.islandromer.com/uploads/1/3/0/7/130775978/5663768.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/97313932809.pdf
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/85675159732.pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/37563319234.pdf
    • https://cdn.shopify.com/s/files/1/0439/3625/2072/files/asahi_beer_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/71657703332.pdf
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/htaccess_cache_control.pdf
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/13184169956.pdf
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/molarijupevub.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/aphis_ppq_form_505.pdf
    • https://cdn.shopify.com/s/files/1/0437/6651/3818/files/lipuw.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_off00007364.bin
9f762ac2621630a8a6b31c9f3f447efd1cdce7301a32bbc162663b8f5fedea6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 5144 bytes
font_01_sfnt_off000084d1.bin
b065f87221d148569e8a5532a3ac5424f7a9c12f09377c4cac56705a714fddea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84D1 10256 bytes

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