Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d00f819d064fac8…

MALICIOUS

PDF

38.8 KB Created: 2020-08-02 14:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c14ffde49fe61234256043db0853689 SHA-1: 024768ffb9c4b7f37b3f693cd65c19c1df691ec6 SHA-256: 4d00f819d064fac854697eacc2ed67eb4d89ff52fb9b2205470bf53e6a1515cd
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.com/wb?keyword=kinetic%20and%20potential%20energy%20worksheet%20with%20answers'. This URL is likely part of a phishing or scam campaign, attempting to lure users to malicious content under the guise of educational material. The document also contains a PDF link farm heuristic, indicating a large number of external links, many hosted on cdn.shopify.com, which is a common tactic for SEO poisoning or distributing malicious files.

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=kinetic%20and%20potential%20energy%20worksheet%20with%20answers
    • http://files.tirepeaterclub.com/uploads/1/3/1/4/131483344/2959976.pdf
    • http://files.nadiaohsp.com/uploads/1/3/0/7/130775714/satilabulagajed-woxilibolexe-xajegevoni-pavitew.pdf
    • http://files.brightspace.co.nz/uploads/1/3/1/6/131637409/5088926.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/kilemenurog.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/6663889362.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/zizowugebuwakiporu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3893/1109/files/27395046739.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/pull_request_workflow.pdf
    • https://cdn.shopify.com/s/files/1/0437/8093/1742/files/xeduzukegewogala.pdf
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/29379925528.pdf
    • https://cdn.shopify.com/s/files/1/0432/8135/0820/files/xisilewozejobifetuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/37378640003.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/buwenikulajudazawaxutil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/hampton_bay_transformer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/nedube.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/53822117167.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_off00005950.bin
f4834c2caeacad166924e41db0f28b0076dff3b9843280ec20f3519b388eeb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5950 5564 bytes
font_01_sfnt_off00006c50.bin
384ad9bde98482ddc89d0eef2f4493f6a49ffbb666b745d13cb67a29f8b89d9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 9796 bytes

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