Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecf0ef569f9b180…

MALICIOUS

PDF

54.7 KB Created: 2020-09-16 13:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0098f8882d619458953b631f6d8b7cf1 SHA-1: fa72528023173cc930aa27dac499b110fcd93861 SHA-256: 3ecf0ef569f9b180397e5bcb5c3d9873daf66d97bdaf9419d48dd59668bdad3b
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.ru/wix?keyword=star+girl+christmas, which is likely used to lure victims. The document body contains numerous embedded URLs, many pointing to shopify.com, but the critical heuristic specifically calls out the ttraff.ru redirector as malicious. No scripts were extracted, but the structure suggests a delivery mechanism for further malicious content.

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.ru/wix?keyword=star+girl+christmas
    • http://files.admiredbuilders.com/uploads/1/3/1/4/131453706/numidalatataf_nopudap_bivedo.pdf
    • http://kidozulo.carolineuahn.com/uploads/1/3/0/7/130775934/tufiw.pdf
    • http://jawodot.tulipcityunited.com/uploads/1/3/1/4/131407424/wiwujukel.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/43831908617.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/floodplain_risk_management_guideline_oeh_2007.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/depreciation_schedule_template_rental_property.pdf
    • https://53f3a2f0-dd75-466f-a78e-e155862cd52d.filesusr.com/ugd/f08e01_328b91c2448e4abc88b32fcbd6221717.pdf?index=true
    • https://42c96d3b-411e-4100-a0cc-3e42c25e3a09.filesusr.com/ugd/154db6_20c8913494244b0d9413fc98e1a82726.pdf?index=true
    • https://8948e7a1-a49f-4671-b059-146ccb542f77.filesusr.com/ugd/33ab24_7356a513594344cb9bc3490939db6177.pdf?index=true
    • https://6dc21e1d-8582-41ee-a6f9-c71b0899613c.filesusr.com/ugd/2994dd_1b875335da634709a43d17a81becfb4b.pdf?index=true
    • https://644741c7-10c1-4c23-be3f-84ce93b5938b.filesusr.com/ugd/227d0f_d04c91705cf94f2993f3080df87512a0.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/ncert_class_11_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/amended_motor_vehicles_act.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/30498968141.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/dolifeguxofubifimix.pdf
    • https://cdn.shopify.com/s/files/1/0435/2658/6527/files/biblia_de_estudio_reina_valera_en.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad4.bin
e49fbe1772053031f158b533c06bcdbfa35d3736e25f3034ef121d04af75a858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 5316 bytes
font_01_sfnt_off00007caf.bin
54ce2b676a523dce9a0dc2fbafb3a0b20f0e5223d45d03720c1eb32af61f8f8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAF 4868 bytes
font_02_sfnt_off00008ea0.bin
7c771081052a305baf1ab51e72f971177e785e7abf7ac1fe1ae3fdde9df03400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA0 13096 bytes
font_03_sfnt_off0000b7db.bin
967d89e51290aceb8fea09c2f9e0c707663cecf1a9b826b2128538f448fdbc28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DB 16164 bytes

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