Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c9dee8bc66fbf0…

MALICIOUS

PDF

69.3 KB Created: 2020-07-24 16:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51738f060036c5eb68d13d07a3f7b4e7 SHA-1: ecc1d7a12a8be9919e29a63d58d697957c199c2f SHA-256: 94c9dee8bc66fbf02552a536ecacf7ce56ced236ab3a2e740e54f9fb5d9b3bf5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, identified as a "PDF SEO Link Farm", with the primary malicious redirector pointing to a URL related to hypertension treatment guidelines. This suggests a social engineering tactic to drive traffic to potentially malicious or ad-filled sites. The presence of a malicious redirector link further confirms the intent to lead users to harmful content. No scripts were extracted from this sample.

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=stage+2+hypertension+treatment+guidelines
    • http://files.lifeworthmentor.com/uploads/1/3/1/0/131071063/bumalufelax_nonuwuzopugexo_vufilakuvololub_bajamojosikug.pdf
    • http://files.vedranasubotic.com/uploads/1/3/1/6/131636988/xagiresug.pdf
    • http://files.annaesonesson.com/uploads/1/3/0/7/130738806/4a7d3.pdf
    • http://files.mormonwomenshistoryinitiative.org/uploads/1/3/1/4/131406068/gudepale-junema-nanuze-bixef.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/xelezekazevoragojekuberuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3556/5978/files/litavekewujafotalive.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/89213637822.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/75165371763.pdf
    • https://cdn.shopify.com/s/files/1/0430/2176/2723/files/tavewobeputumizuruv.pdf
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/68336965344.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/gezenabolapiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gadimizivejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/88351459517.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3690/files/salemumikemebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/walej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/59231613686.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5270/files/pimerore.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3783/files/belemewisiza.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_off0000d1e5.bin
11b24c560b133412a3e0ca125e0b70ce8b1da44e59f9d82ecb00c90aaf8fe2ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E5 5592 bytes
font_01_sfnt_off0000e4b6.bin
b6c05f880e436758e3831c1aae8e81fcc1a3b56fc5392d184c39b70df6690a7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B6 10108 bytes