Malicious PDF — malware analysis report

Static analysis result for SHA-256 b11703b637b5645b…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 05:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9541e4dd9f6110c20897610ee4edbff9 SHA-1: 91e07a1e51cb8a123aa85c8be915913d83608585 SHA-256: b11703b637b5645b3cf98fc2c0c639fea413f3a3dd162a93777b303e177d63d0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=europe%20map%20with%20cities%20and%20countries%20pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic to increase visibility and lure victims. 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.com/wb?keyword=europe%20map%20with%20cities%20and%20countries%20pdf
    • http://files.jwnorthavid.net/uploads/1/3/0/7/130740483/4851866.pdf
    • http://files.eform-solutions.com/uploads/1/3/0/8/130813860/c1a07f5c.pdf
    • http://files.schomesnc.com/uploads/1/3/1/3/131383383/1550015.pdf
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/86341102969.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/50085090369.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/vonaramuzobeniti.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/university_of_cape_town_prospectus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/loketugumatebusisanidukad.pdf
    • https://cdn.shopify.com/s/files/1/0436/1905/7826/files/dekej.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/pasax.pdf
    • https://cdn.shopify.com/s/files/1/0434/1861/5975/files/list_of_cities_in_us.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/18649098527.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_off00005e40.bin
5a4da760aa12c2f55ed58dfe41d232744ad46d5bcdfc71e1c4c6f22dc235c111		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 5412 bytes
font_01_sfnt_off0000709b.bin
613eaf5abe131c0863c9f2e08bb682209dc13452bbfbfbd6391108b2b417b869		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709B 10104 bytes

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