Malicious PDF — malware analysis report

Static analysis result for SHA-256 40077e251bdf59e7…

MALICIOUS

PDF

36.3 KB Created: 2020-08-24 01:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b09453651ef5d0905ea6fbb654f437b2 SHA-1: 04f8a0950c92e4790f5990800911d5075b4aa8c4 SHA-256: 40077e251bdf59e79ad0d83355e771f24deace63f9004f4498a2ef539bb858dc
150 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as 'Gmetrix excel test 3 answers'. This link points to 'ttraff.com', which is flagged as a malicious redirector. The document also features a large number of embedded links, many pointing to Shopify domains, likely as part of a link farm to improve search engine ranking for malicious content. The primary intent appears to be luring users to click the malicious link, which then redirects to further malicious infrastructure.

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.com/pify?keyword=gmetrix+excel+test+3+answers
    • http://bodel.gamechefs.net/uploads/1/3/0/7/130738970/naxaleta_furokorukorov_sanoguf_mosejuful.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/brucella_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0451/0426/7427/files/suelo_franco_arcilloso_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/wesixazukoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/bilurep.pdf
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/air_entraining_agents.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/xumomapem.pdf
    • https://cdn.shopify.com/s/files/1/0464/4903/3384/files/xokiwavikogoko.pdf
    • https://cdn.shopify.com/s/files/1/0454/4213/8262/files/android_studio_generate_apk_name.pdf
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/tojifonevubenapubixoforif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/kyle_lowry_rotoworld.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/kirupawem.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_off00004ee6.bin
e4d57d92a77accc70bf6d570a21208942aa7cb595dd140d18b8b5ca2838eb1be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE6 5300 bytes
font_01_sfnt_off000060f0.bin
9254cb369b40fb7ea9da710456ec5111611f37435939f6131cf1c439a00313d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 10396 bytes

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