Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7d8ee908a91350…

MALICIOUS

PDF

33.6 KB Created: 2020-09-17 09:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9276d5dd5a3f928cc68eb9e488c2087 SHA-1: 6e659eb69a1d2b969b1a287697e182e95fd88cff SHA-256: 4a7d8ee908a91350debc8074f95afdf9e827732fab7d3112f3e1778584405885
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this is a malicious redirector link and a PDF link farm, suggesting the document's primary purpose is to lure users to malicious sites. No scripts were extracted, but the extensive link farm strongly suggests a phishing or malware distribution attempt.

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.link/wix?keyword=www.onemorelevel.com+trap+the+tiger
    • http://files.lashesbymatick.com/uploads/1/3/1/4/131438829/morabeta.pdf
    • http://peredor.bayareaplacentaservices.com/uploads/1/3/1/4/131483281/rawedeviwek.pdf
    • http://jivudaxo.sandbfoundation.org/uploads/1/3/1/6/131637254/bolunajufotidaxesef.pdf
    • http://wubibegog.drjohncasteele.com/uploads/1/3/1/0/131071157/3710541.pdf
    • http://files.uhsbe.org/uploads/1/3/1/4/131437636/nodid.pdf
    • http://files.earthtechcivils.com/uploads/1/3/1/6/131637631/vogejokutimavasele.pdf
    • https://cdn.shopify.com/s/files/1/0436/5742/9145/files/nudowererugobazaligiwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5110/files/lozafulim.pdf
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/5660278016.pdf
    • https://cdn.shopify.com/s/files/1/0429/1444/7519/files/64726904170.pdf
    • https://cdn.shopify.com/s/files/1/0452/7580/7906/files/45811825369.pdf
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/35974512218.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/robot_androides_sexuales.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_off00004620.bin
841e0b04620bec96821c0941bbe72e6bc9dfe8b96908d3b20966c3bf5a6feb1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4620 5364 bytes
font_01_sfnt_off00005859.bin
c2d4ad766d97afe743306869afeeb7f00bea7f2a87459b76469b6821e3855b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5859 9728 bytes

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