Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e0efad7f07e2137…

MALICIOUS

PDF

39.5 KB Created: 2020-08-20 21:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc6d9c7c5877657545c1d9486a4f707 SHA-1: 3cc6493eeace0d8936d03f42962c3639dac9fa97 SHA-256: 8e0efad7f07e2137e877def1502598aebfd82d91c5db6e2c79a67feaf7babaa0
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=aerobic+step+exercise+stepper+platform', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL and other links pointing to Shopify, suggesting an attempt to lure users to potentially harmful content under the guise of academic or informational resources.

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=aerobic+step+exercise+stepper+platform
    • http://files.thecreativitycore.com/uploads/1/3/0/7/130739144/6871841.pdf
    • https://cdn.shopify.com/s/files/1/0435/0771/2155/files/modern_control_systems_13th.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/mathematics_8th_grade_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/avancemos_1b.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/liruwiputiluzojaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57727452667.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/xoguvifegadobegu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/11095751157.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/vulidifegomekoza.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/37547009413.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/86753452939.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/ketanojusekofivusud.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_off00005d5b.bin
554be138412df3f1399dcc1d0ca756e158a978bd0f586a590145184da2ab771d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5B 5360 bytes
font_01_sfnt_off00006f7e.bin
6e16572e573e75fdd0f8d82b2e0a266fd8849ff319e77e6c10c75cbd80a68f75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7E 10208 bytes

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