Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9438f9202025618…

MALICIOUS

PDF

44.8 KB Created: 2020-08-23 14:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 878a9c6ca6c30d563a9ba91b874450ff SHA-1: e68df8e5af013b837a4e36c70c525c69ff80f211 SHA-256: e9438f9202025618bde90905f754031761ce6701fe357835d5709ed7900e658a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to external PDF files hosted on various domains, including a redirector. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to drive traffic to malicious sites or to obscure the true destination of the payload. The primary malicious link identified is https://ttraff.com/pify?keyword=best+nfl+cheerleaders+uniforms, which is flagged as a known malicious redirector.

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=best+nfl+cheerleaders+uniforms
    • http://files.seymourdachshunds.com/uploads/1/3/0/7/130776205/zitonuziburivugizi.pdf
    • http://files.bfgcommercial.com/uploads/1/3/1/3/131398195/zudisakemofed-tovokuxu-juwusafevarafel-makutafirirobur.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3857/files/xufebesunuse.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/34169383519.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/sales_agreement_letter.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/67057253065.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/42423651149.pdf
    • https://cdn.shopify.com/s/files/1/0433/3164/9689/files/gepupetepitajefina.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/vorelanom.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/xiliveloxif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1449/files/61307299515.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/dijegojopeminu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/ages_problems_shortcuts_and_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/neolithic_revolution_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/luwabubosekajusanavi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006360.bin
1a945acaafe7bc38c9a57b9625254035f84bb99558162f250da2e74dce1bfcfb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6360 5192 bytes
font_01_sfnt_off000074d1.bin
400a2e0dba9b34f4bf28a81216329192dd97d3f501eca34e7c47f24fd992a6c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D1 10396 bytes
font_02_sfnt_off00009855.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9855 4324 bytes