Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca361d791122b18b…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 03:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a02d87767cef2d06c67be7b10490699 SHA-1: aed5340fa34e27625151628162912002cc0de675 SHA-256: ca361d791122b18bbe77f10f091df4d9e2348196836c2572cdc8ab69070dc637
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=encyclop%25C3%25A9die+universalis+pdf', is designed to lure users to potentially harmful content. The document body, though heavily obfuscated, contains references to the malicious URL and a large number of other URLs hosted on cdn.shopify.com, suggesting a link farm or redirection strategy.

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=encyclop%25C3%25A9die+universalis+pdf
    • http://files.dancingwiththelocalstars.com/uploads/1/3/0/7/130776183/62bff.pdf
    • http://jedid.framedfashion.com/uploads/1/3/1/4/131482975/8241721.pdf
    • http://files.esandelle.com.au/uploads/1/3/2/7/132740594/nokuxusunoselurut.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/factoring_polynomials_steps.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8584587797.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7438/files/xojatefanezezisujakoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/lisaluwuvinodubupapetekek.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3941/files/gajuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2439/files/22083188860.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/wenofovasezanesokogi.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/wall_street_oasis_interview_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/9294/9658/files/circumference_of_a_circle_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/vesivuxajuserigapinux.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/899181159.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_off000066e9.bin
e0b7a4cf85802955e5afce71368727421c961f5b03bb79500be5df6c86944a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 5408 bytes
font_01_sfnt_off00007924.bin
a48ff57a8580d3d176e34047d265e007798eaf8bdad44df426bce91a64e77312		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7924 11836 bytes

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