Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b51905c62c3c96…

MALICIOUS

PDF

66.2 KB Created: 2020-07-27 22:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d217fb1ccecc091888a40573b65f26d SHA-1: 0eccca62a30664855e5487af4e04226f4dd2e3dd SHA-256: e3b51905c62c3c96a7f44c63e57582dadb8d514f08e8cadd524654a6984e5535
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or redirection scheme. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious content. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its intended 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.ru/pify?keyword=brasilandia+o+calhambeque+da+saudade
    • http://files.pnwvixens.com/uploads/1/3/1/3/131379899/busizibaj-wazokivapapek-jufak-sidukijoporeti.pdf
    • http://files.mrsbaergsclass.com/uploads/1/3/1/4/131406507/dce15f6959f6.pdf
    • http://files.lonestarcarpetcare.com/uploads/1/3/2/6/132681885/tuzalirud.pdf
    • http://files.unbrokenwear.com/uploads/1/3/0/8/130873851/a8fc38f64a.pdf
    • http://files.mrs
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/xudefebapuzasumufibu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/fosiribuwuninuge.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/32259999768.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/27882789380.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/88874486346.pdf
    • https://cdn.shopify.com/s/files/1/0428/0628/0355/files/98995036502.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/kibatimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/30186935066.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/mubegojidesusezazodiwida.pdf
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/86298423252.pdf
    • https://cdn.shopify.com/s/files/1/0432/0893/3540/files/zaxitolep.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_off0000c73a.bin
3ec340d0d6d008fe0ae17e21c3b9906ad4d293c69e99c8222540bedff5a7675f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC73A 5296 bytes
font_01_sfnt_off0000d8f6.bin
ea5fc7dcd22d3bbbea26ead932cb963c75da49641d0daac4883be1f29041caf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F6 10008 bytes

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