Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97c691572ed5e81…

MALICIOUS

PDF

44.6 KB Created: 2020-08-17 04:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9e50d6dd42865848fcb4e6ce17cd81 SHA-1: 7f4371a8cf4f2bf1ed89a9b2083f981b890313d9 SHA-256: c97c691572ed5e8173226081eb6689c3fa34e116061b0d318c78c910a2edc687
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'business plan for poultry project pdf'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=business+plan+for+poultry+project+pdf, which is likely used to redirect users to further malicious content. The presence of multiple PDF links and the ML classifier flagging indicate a high likelihood of malicious intent.

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=business+plan+for+poultry+project+pdf
    • http://files.elizabethashdown.co.uk/uploads/1/3/0/8/130874658/4391498.pdf
    • http://files.redhawksmusic.org/uploads/1/3/1/3/131379875/9513615.pdf
    • http://files.centertowndfw.com/uploads/1/3/0/7/130738568/82af2a1180f2.pdf
    • https://cdn.shopify.com/s/files/1/0437/9538/2429/files/molecular_genetics_of_bacteria_book.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/89951366540.pdf
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/sosuvoka.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/beep_sound_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/a_ronda_da_noite_agustina_bessa_luis.pdf
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/wobuluduxobudup.pdf
    • https://cdn.shopify.com/s/files/1/0435/4428/1247/files/sagasitaxigubapen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/zubasujojasofofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/pcr_technique_steps.pdf
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/76029746536.pdf
    • https://cdn.shopify.com/s/files/1/0443/6888/7964/files/60096011438.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_off000070fb.bin
599aa807df00043eacc893c5c7fa2c7561f4be78bf24299c9041f9e345c61699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FB 5376 bytes
font_01_sfnt_off0000835e.bin
23327109e961ae10fc7d0281ba39e5a3b05fe0a3c6fe0c7a601baa293b50ede9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835E 10120 bytes

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