Malicious PDF — malware analysis report

Static analysis result for SHA-256 af80f3fd94217862…

MALICIOUS

PDF

45.3 KB Created: 2020-08-12 09:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9b2ce2fb5d3540891f8a040fab5d35 SHA-1: f54e014206d9411f53d0e52f06366438d15291b7 SHA-256: af80f3fd94217862723afa02f4a1d8d9c22eeabc6aef77fc70f5db782918fd23
120 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 `https://ttraff.cc/pify?keyword=banish+boring+words+free+pdf`. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO manipulation effort to distribute malicious links. The document body contains text related to 'free pdf' and the URL itself mentions 'banish boring words', reinforcing the 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=banish+boring+words+free+pdf
    • http://files.malarkeystavern.com/uploads/1/3/1/3/131379894/jurumotu.pdf
    • http://files.lumianna.fi/uploads/1/3/0/8/130874422/1364949.pdf
    • http://files.edbanghart.com/uploads/1/3/0/7/130740292/pegixu-surir-dorinasemurasuj-rajotunuduk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/forabizor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/nayvadius_demun_wilburn_56_nights.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/57596712864.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/jakufuxivoregowudotila.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/ielts_academic_reading_samples_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/nukixebozozojamel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/67943419461.pdf
    • https://cdn.shopify.com/s/files/1/0438/0783/4272/files/set_up_local_server.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/98963820468.pdf
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/us_address_sample.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006669.bin
bdac746c37a6adcc6c37505254f076f187ce3c3fe4767739bc89f86170ba3616		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6669 5260 bytes
font_01_sfnt_off0000783e.bin
8a8ade1b663917cd815fcac106ba8bdcdab9d4c825d2ea06396bf8275fc556a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 10088 bytes
font_02_sfnt_off00009ab6.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB6 4324 bytes

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