Malicious PDF — malware analysis report

Static analysis result for SHA-256 4632207cd0e53190…

MALICIOUS

PDF

42.5 KB Created: 2020-08-07 03:36:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0366fd41fb42b7e644b9ffb405e1c68b SHA-1: e41fdbb3efcfcb4511c42479307f4fb4966b2550 SHA-256: 4632207cd0e53190103f48774f0e4165dfdb0024299b7391ddb6dfbd3891bdd6
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.ru'. The document body, though partially corrupted, includes the same URL and text related to 'Agile software development with scrum', suggesting a lure to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious redirector.

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.ru/pify?keyword=agile+software+development+with+scrum+mike+beedle+pdf
    • http://files.jcfarming.co.uk/uploads/1/3/1/8/131857421/7437542.pdf
    • http://files.tlcor.org/uploads/1/3/1/3/131380397/2787cf38.pdf
    • http://wesova.2ra.co/uploads/1/3/0/7/130776486/bezavibagara_wowupawi_mebafog.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/46620074582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/86402506242.pdf
    • https://cdn.shopify.com/s/files/1/0428/9629/4051/files/wevuzazifazaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/45552826882.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/lupilopevew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/44092455045.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0433/5448/8990/files/2001_mitsubishi_mirage_repair_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.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_off00006662.bin
0f8e0d87fdb578d71061b7e508ea8255b1a061a2d52475d8f02304e5552a4025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6662 5912 bytes
font_01_sfnt_off00007a7a.bin
acce1f8143426b90c51b4f33d3f744e2c336811175ff59d03ce70458f4916454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7A 10088 bytes

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